Annotation of mandoc/roff.c, Revision 1.362
1.362 ! schwarze 1: /* $Id: roff.c,v 1.361 2019/01/05 09:10:32 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.360 schwarze 4: * Copyright (c) 2010-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.201 schwarze 31: #include "mandoc_aux.h"
1.295 schwarze 32: #include "mandoc_ohash.h"
1.345 schwarze 33: #include "mandoc.h"
1.265 schwarze 34: #include "roff.h"
1.349 schwarze 35: #include "mandoc_parse.h"
1.226 schwarze 36: #include "libmandoc.h"
1.266 schwarze 37: #include "roff_int.h"
1.346 schwarze 38: #include "tbl_parse.h"
1.347 schwarze 39: #include "eqn_parse.h"
1.82 kristaps 40:
1.355 schwarze 41: /*
42: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
43: * that an escape sequence resulted from copy-in processing and
44: * needs to be checked or interpolated. As it is used nowhere
45: * else, it is defined here rather than in a header file.
46: */
47: #define ASCII_ESC 27
48:
1.170 schwarze 49: /* Maximum number of string expansions per line, to break infinite loops. */
50: #define EXPAND_LIMIT 1000
51:
1.315 schwarze 52: /* Types of definitions of macros and strings. */
53: #define ROFFDEF_USER (1 << 1) /* User-defined. */
54: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
55: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
56: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
57: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
58: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 59: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 60:
1.266 schwarze 61: /* --- data types --------------------------------------------------------- */
62:
1.147 kristaps 63: /*
1.167 kristaps 64: * An incredibly-simple string buffer.
65: */
1.94 kristaps 66: struct roffstr {
1.167 kristaps 67: char *p; /* nil-terminated buffer */
68: size_t sz; /* saved strlen(p) */
1.166 kristaps 69: };
70:
71: /*
1.167 kristaps 72: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 73: */
74: struct roffkv {
75: struct roffstr key;
76: struct roffstr val;
77: struct roffkv *next; /* next in list */
1.94 kristaps 78: };
79:
1.180 schwarze 80: /*
81: * A single number register as part of a singly-linked list.
82: */
83: struct roffreg {
84: struct roffstr key;
1.181 schwarze 85: int val;
1.327 schwarze 86: int step;
1.180 schwarze 87: struct roffreg *next;
88: };
89:
1.295 schwarze 90: /*
91: * Association of request and macro names with token IDs.
92: */
93: struct roffreq {
94: enum roff_tok tok;
95: char name[];
96: };
97:
1.339 schwarze 98: /*
99: * A macro processing context.
100: * More than one is needed when macro calls are nested.
101: */
102: struct mctx {
103: char **argv;
104: int argc;
105: int argsz;
106: };
107:
1.67 kristaps 108: struct roff {
1.296 schwarze 109: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 110: struct roffnode *last; /* leaf of stack */
1.339 schwarze 111: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 112: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 113: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 114: struct roffreg *regtab; /* number registers */
1.166 kristaps 115: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 116: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 117: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
118: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 119: const char *current_string; /* value of last called user macro */
1.118 kristaps 120: struct tbl_node *first_tbl; /* first table parsed */
121: struct tbl_node *last_tbl; /* last table parsed */
122: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 123: struct eqn_node *last_eqn; /* equation parser */
124: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 125: int eqn_inline; /* current equation is inline */
1.223 schwarze 126: int options; /* parse options */
1.339 schwarze 127: int mstacksz; /* current size of mstack */
128: int mstackpos; /* position in mstack */
1.223 schwarze 129: int rstacksz; /* current size limit of rstack */
130: int rstackpos; /* position in rstack */
1.227 schwarze 131: int format; /* current file in mdoc or man format */
1.223 schwarze 132: char control; /* control character */
1.303 schwarze 133: char escape; /* escape character */
1.79 kristaps 134: };
135:
1.67 kristaps 136: struct roffnode {
1.294 schwarze 137: enum roff_tok tok; /* type of node */
1.67 kristaps 138: struct roffnode *parent; /* up one in stack */
139: int line; /* parse line */
140: int col; /* parse col */
1.106 kristaps 141: char *name; /* node name, e.g. macro name */
1.79 kristaps 142: char *end; /* end-rules: custom token */
143: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 144: int rule; /* current evaluation rule */
1.67 kristaps 145: };
146:
147: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 148: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 149: struct buf *buf, /* input buffer */ \
1.67 kristaps 150: int ln, /* parse line */ \
1.75 kristaps 151: int ppos, /* original pos in buffer */ \
152: int pos, /* current pos in buffer */ \
1.74 kristaps 153: int *offs /* reset offset of buffer data */
1.67 kristaps 154:
1.340 schwarze 155: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 156:
157: struct roffmac {
1.79 kristaps 158: roffproc proc; /* process new macro */
159: roffproc text; /* process as child text of macro */
160: roffproc sub; /* process as child of macro */
161: int flags;
162: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 163: };
164:
1.141 kristaps 165: struct predef {
166: const char *name; /* predefined input name */
167: const char *str; /* replacement symbol */
168: };
169:
170: #define PREDEF(__name, __str) \
171: { (__name), (__str) },
172:
1.266 schwarze 173: /* --- function prototypes ------------------------------------------------ */
174:
1.340 schwarze 175: static int roffnode_cleanscope(struct roff *);
176: static int roffnode_pop(struct roff *);
1.294 schwarze 177: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 178: const char *, int, int);
1.346 schwarze 179: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 180: static int roff_als(ROFF_ARGS);
181: static int roff_block(ROFF_ARGS);
182: static int roff_block_text(ROFF_ARGS);
183: static int roff_block_sub(ROFF_ARGS);
184: static int roff_cblock(ROFF_ARGS);
185: static int roff_cc(ROFF_ARGS);
186: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 187: static int roff_char(ROFF_ARGS);
1.340 schwarze 188: static int roff_cond(ROFF_ARGS);
189: static int roff_cond_text(ROFF_ARGS);
190: static int roff_cond_sub(ROFF_ARGS);
191: static int roff_ds(ROFF_ARGS);
192: static int roff_ec(ROFF_ARGS);
193: static int roff_eo(ROFF_ARGS);
194: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 195: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 196: static int roff_evalnum(struct roff *, int,
197: const char *, int *, int *, int);
198: static int roff_evalpar(struct roff *, int,
1.261 schwarze 199: const char *, int *, int *, int);
1.198 schwarze 200: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 201: static int roff_expand(struct roff *, struct buf *,
202: int, int, char);
1.155 kristaps 203: static void roff_free1(struct roff *);
1.180 schwarze 204: static void roff_freereg(struct roffreg *);
1.167 kristaps 205: static void roff_freestr(struct roffkv *);
1.212 schwarze 206: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 207: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 208: static int roff_getop(const char *, int *, char *);
1.327 schwarze 209: static int roff_getregn(struct roff *,
210: const char *, size_t, char);
1.273 schwarze 211: static int roff_getregro(const struct roff *,
212: const char *name);
1.325 schwarze 213: static const char *roff_getstrn(struct roff *,
1.315 schwarze 214: const char *, size_t, int *);
1.271 schwarze 215: static int roff_hasregn(const struct roff *,
216: const char *, size_t);
1.340 schwarze 217: static int roff_insec(ROFF_ARGS);
218: static int roff_it(ROFF_ARGS);
219: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 220: static void roff_man_alloc1(struct roff_man *);
221: static void roff_man_free1(struct roff_man *);
1.340 schwarze 222: static int roff_manyarg(ROFF_ARGS);
1.358 schwarze 223: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 224: static int roff_nop(ROFF_ARGS);
225: static int roff_nr(ROFF_ARGS);
226: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 227: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 228: int, int);
1.340 schwarze 229: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 230: int, int *);
1.340 schwarze 231: static int roff_renamed(ROFF_ARGS);
232: static int roff_return(ROFF_ARGS);
233: static int roff_rm(ROFF_ARGS);
234: static int roff_rn(ROFF_ARGS);
235: static int roff_rr(ROFF_ARGS);
1.326 schwarze 236: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 237: size_t, int, char, int);
1.94 kristaps 238: static void roff_setstr(struct roff *,
1.106 kristaps 239: const char *, const char *, int);
1.207 schwarze 240: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 241: size_t, const char *, size_t, int);
1.340 schwarze 242: static int roff_shift(ROFF_ARGS);
243: static int roff_so(ROFF_ARGS);
244: static int roff_tr(ROFF_ARGS);
245: static int roff_Dd(ROFF_ARGS);
246: static int roff_TE(ROFF_ARGS);
247: static int roff_TS(ROFF_ARGS);
248: static int roff_EQ(ROFF_ARGS);
249: static int roff_EN(ROFF_ARGS);
250: static int roff_T_(ROFF_ARGS);
251: static int roff_unsupp(ROFF_ARGS);
252: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 253:
1.266 schwarze 254: /* --- constant data ------------------------------------------------------ */
255:
1.261 schwarze 256: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
257: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
258:
1.294 schwarze 259: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 260: "br", "ce", "fi", "ft",
261: "ll", "mc", "nf",
262: "po", "rj", "sp",
1.312 schwarze 263: "ta", "ti", NULL,
1.294 schwarze 264: "ab", "ad", "af", "aln",
265: "als", "am", "am1", "ami",
266: "ami1", "as", "as1", "asciify",
267: "backtrace", "bd", "bleedat", "blm",
268: "box", "boxa", "bp", "BP",
269: "break", "breakchar", "brnl", "brp",
1.305 schwarze 270: "brpnl", "c2", "cc",
1.294 schwarze 271: "cf", "cflags", "ch", "char",
272: "chop", "class", "close", "CL",
273: "color", "composite", "continue", "cp",
274: "cropat", "cs", "cu", "da",
275: "dch", "Dd", "de", "de1",
276: "defcolor", "dei", "dei1", "device",
277: "devicem", "di", "do", "ds",
278: "ds1", "dwh", "dt", "ec",
279: "ecr", "ecs", "el", "em",
280: "EN", "eo", "EP", "EQ",
281: "errprint", "ev", "evc", "ex",
282: "fallback", "fam", "fc", "fchar",
283: "fcolor", "fdeferlig", "feature", "fkern",
284: "fl", "flig", "fp", "fps",
285: "fschar", "fspacewidth", "fspecial", "ftr",
286: "fzoom", "gcolor", "hc", "hcode",
287: "hidechar", "hla", "hlm", "hpf",
288: "hpfa", "hpfcode", "hw", "hy",
289: "hylang", "hylen", "hym", "hypp",
290: "hys", "ie", "if", "ig",
291: "index", "it", "itc", "IX",
292: "kern", "kernafter", "kernbefore", "kernpair",
293: "lc", "lc_ctype", "lds", "length",
294: "letadj", "lf", "lg", "lhang",
295: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 296: "ls", "lsm", "lt",
1.294 schwarze 297: "mediasize", "minss", "mk", "mso",
298: "na", "ne", "nh", "nhychar",
299: "nm", "nn", "nop", "nr",
300: "nrf", "nroff", "ns", "nx",
301: "open", "opena", "os", "output",
302: "padj", "papersize", "pc", "pev",
303: "pi", "PI", "pl", "pm",
1.312 schwarze 304: "pn", "pnr", "ps",
1.294 schwarze 305: "psbb", "pshape", "pso", "ptr",
306: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 307: "return", "rfschar", "rhang",
1.294 schwarze 308: "rm", "rn", "rnn", "rr",
309: "rs", "rt", "schar", "sentchar",
310: "shc", "shift", "sizes", "so",
311: "spacewidth", "special", "spreadwarn", "ss",
312: "sty", "substring", "sv", "sy",
1.300 schwarze 313: "T&", "tc", "TE",
1.301 schwarze 314: "TH", "tkf", "tl",
1.294 schwarze 315: "tm", "tm1", "tmc", "tr",
316: "track", "transchar", "trf", "trimat",
317: "trin", "trnt", "troff", "TS",
318: "uf", "ul", "unformat", "unwatch",
319: "unwatchn", "vpt", "vs", "warn",
320: "warnscale", "watch", "watchlength", "watchn",
321: "wh", "while", "write", "writec",
322: "writem", "xflag", ".", NULL,
1.306 schwarze 323: NULL, "text",
1.294 schwarze 324: "Dd", "Dt", "Os", "Sh",
325: "Ss", "Pp", "D1", "Dl",
326: "Bd", "Ed", "Bl", "El",
327: "It", "Ad", "An", "Ap",
328: "Ar", "Cd", "Cm", "Dv",
329: "Er", "Ev", "Ex", "Fa",
330: "Fd", "Fl", "Fn", "Ft",
331: "Ic", "In", "Li", "Nd",
332: "Nm", "Op", "Ot", "Pa",
333: "Rv", "St", "Va", "Vt",
334: "Xr", "%A", "%B", "%D",
335: "%I", "%J", "%N", "%O",
336: "%P", "%R", "%T", "%V",
337: "Ac", "Ao", "Aq", "At",
338: "Bc", "Bf", "Bo", "Bq",
339: "Bsx", "Bx", "Db", "Dc",
340: "Do", "Dq", "Ec", "Ef",
341: "Em", "Eo", "Fx", "Ms",
342: "No", "Ns", "Nx", "Ox",
343: "Pc", "Pf", "Po", "Pq",
344: "Qc", "Ql", "Qo", "Qq",
345: "Re", "Rs", "Sc", "So",
346: "Sq", "Sm", "Sx", "Sy",
347: "Tn", "Ux", "Xc", "Xo",
348: "Fo", "Fc", "Oo", "Oc",
349: "Bk", "Ek", "Bt", "Hf",
350: "Fr", "Ud", "Lb", "Lp",
351: "Lk", "Mt", "Brq", "Bro",
352: "Brc", "%C", "Es", "En",
1.299 schwarze 353: "Dx", "%Q", "%U", "Ta",
354: NULL,
1.294 schwarze 355: "TH", "SH", "SS", "TP",
1.332 schwarze 356: "TQ",
1.294 schwarze 357: "LP", "PP", "P", "IP",
358: "HP", "SM", "SB", "BI",
359: "IB", "BR", "RB", "R",
360: "B", "I", "IR", "RI",
361: "RE", "RS", "DT", "UC",
1.297 schwarze 362: "PD", "AT", "in",
1.333 schwarze 363: "SY", "YS", "OP",
364: "EX", "EE", "UR",
1.317 schwarze 365: "UE", "MT", "ME", NULL
1.294 schwarze 366: };
367: const char *const *roff_name = __roff_name;
368:
369: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 370: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 371: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 372: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 373: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 374: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.358 schwarze 376: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 380: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 382: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 383: { roff_unsupp, NULL, NULL, 0 }, /* ab */
384: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
385: { roff_line_ignore, NULL, NULL, 0 }, /* af */
386: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 387: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
389: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
392: { roff_ds, NULL, NULL, 0 }, /* as */
393: { roff_ds, NULL, NULL, 0 }, /* as1 */
394: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
395: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
396: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
397: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
398: { roff_unsupp, NULL, NULL, 0 }, /* blm */
399: { roff_unsupp, NULL, NULL, 0 }, /* box */
400: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
401: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
402: { roff_unsupp, NULL, NULL, 0 }, /* BP */
403: { roff_unsupp, NULL, NULL, 0 }, /* break */
404: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
405: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 406: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 407: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
408: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
409: { roff_cc, NULL, NULL, 0 }, /* cc */
410: { roff_insec, NULL, NULL, 0 }, /* cf */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
412: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 413: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 414: { roff_unsupp, NULL, NULL, 0 }, /* chop */
415: { roff_line_ignore, NULL, NULL, 0 }, /* class */
416: { roff_insec, NULL, NULL, 0 }, /* close */
417: { roff_unsupp, NULL, NULL, 0 }, /* CL */
418: { roff_line_ignore, NULL, NULL, 0 }, /* color */
419: { roff_unsupp, NULL, NULL, 0 }, /* composite */
420: { roff_unsupp, NULL, NULL, 0 }, /* continue */
421: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
422: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
423: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
424: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
425: { roff_unsupp, NULL, NULL, 0 }, /* da */
426: { roff_unsupp, NULL, NULL, 0 }, /* dch */
427: { roff_Dd, NULL, NULL, 0 }, /* Dd */
428: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
429: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
430: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
431: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
432: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
433: { roff_unsupp, NULL, NULL, 0 }, /* device */
434: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
435: { roff_unsupp, NULL, NULL, 0 }, /* di */
436: { roff_unsupp, NULL, NULL, 0 }, /* do */
437: { roff_ds, NULL, NULL, 0 }, /* ds */
438: { roff_ds, NULL, NULL, 0 }, /* ds1 */
439: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
440: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 441: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 442: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
443: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
444: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
445: { roff_unsupp, NULL, NULL, 0 }, /* em */
446: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 447: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 448: { roff_unsupp, NULL, NULL, 0 }, /* EP */
449: { roff_EQ, NULL, NULL, 0 }, /* EQ */
450: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
451: { roff_unsupp, NULL, NULL, 0 }, /* ev */
452: { roff_unsupp, NULL, NULL, 0 }, /* evc */
453: { roff_unsupp, NULL, NULL, 0 }, /* ex */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
456: { roff_unsupp, NULL, NULL, 0 }, /* fc */
457: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
460: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
463: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
466: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
469: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
471: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
487: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
488: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
489: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
490: { roff_unsupp, NULL, NULL, 0 }, /* index */
491: { roff_it, NULL, NULL, 0 }, /* it */
492: { roff_unsupp, NULL, NULL, 0 }, /* itc */
493: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
494: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
495: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
496: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
497: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
498: { roff_unsupp, NULL, NULL, 0 }, /* lc */
499: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
500: { roff_unsupp, NULL, NULL, 0 }, /* lds */
501: { roff_unsupp, NULL, NULL, 0 }, /* length */
502: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
503: { roff_insec, NULL, NULL, 0 }, /* lf */
504: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
505: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
506: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
507: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
508: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
509: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
510: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
511: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
512: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
513: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
514: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
515: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
516: { roff_insec, NULL, NULL, 0 }, /* mso */
517: { roff_line_ignore, NULL, NULL, 0 }, /* na */
518: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
519: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
520: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
521: { roff_unsupp, NULL, NULL, 0 }, /* nm */
522: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 523: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 524: { roff_nr, NULL, NULL, 0 }, /* nr */
525: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
526: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
527: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
528: { roff_insec, NULL, NULL, 0 }, /* nx */
529: { roff_insec, NULL, NULL, 0 }, /* open */
530: { roff_insec, NULL, NULL, 0 }, /* opena */
531: { roff_line_ignore, NULL, NULL, 0 }, /* os */
532: { roff_unsupp, NULL, NULL, 0 }, /* output */
533: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
534: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
535: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
536: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
537: { roff_insec, NULL, NULL, 0 }, /* pi */
538: { roff_unsupp, NULL, NULL, 0 }, /* PI */
539: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
543: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
544: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
545: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
546: { roff_insec, NULL, NULL, 0 }, /* pso */
547: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
549: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
551: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 552: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 553: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
554: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
555: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 556: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 557: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
558: { roff_rr, NULL, NULL, 0 }, /* rr */
559: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
560: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
561: { roff_unsupp, NULL, NULL, 0 }, /* schar */
562: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
563: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 564: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 565: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
566: { roff_so, NULL, NULL, 0 }, /* so */
567: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
568: { roff_line_ignore, NULL, NULL, 0 }, /* special */
569: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
570: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
571: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
572: { roff_unsupp, NULL, NULL, 0 }, /* substring */
573: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
574: { roff_insec, NULL, NULL, 0 }, /* sy */
575: { roff_T_, NULL, NULL, 0 }, /* T& */
576: { roff_unsupp, NULL, NULL, 0 }, /* tc */
577: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 578: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 579: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
580: { roff_unsupp, NULL, NULL, 0 }, /* tl */
581: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
582: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
583: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
584: { roff_tr, NULL, NULL, 0 }, /* tr */
585: { roff_line_ignore, NULL, NULL, 0 }, /* track */
586: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
587: { roff_insec, NULL, NULL, 0 }, /* trf */
588: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
589: { roff_unsupp, NULL, NULL, 0 }, /* trin */
590: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
591: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
592: { roff_TS, NULL, NULL, 0 }, /* TS */
593: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
594: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
595: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
596: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
597: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
598: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
599: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
600: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
601: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
602: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
603: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
604: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
605: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 606: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 607: { roff_insec, NULL, NULL, 0 }, /* write */
608: { roff_insec, NULL, NULL, 0 }, /* writec */
609: { roff_insec, NULL, NULL, 0 }, /* writem */
610: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
611: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 612: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 613: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 614: };
615:
1.141 kristaps 616: /* Array of injected predefined strings. */
617: #define PREDEFS_MAX 38
618: static const struct predef predefs[PREDEFS_MAX] = {
619: #include "predefs.in"
620: };
621:
1.305 schwarze 622: static int roffce_lines; /* number of input lines to center */
623: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 624: static int roffit_lines; /* number of lines to delay */
625: static char *roffit_macro; /* nil-terminated macro line */
626:
1.207 schwarze 627:
1.266 schwarze 628: /* --- request table ------------------------------------------------------ */
629:
1.295 schwarze 630: struct ohash *
631: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 632: {
1.295 schwarze 633: struct ohash *htab;
634: struct roffreq *req;
635: enum roff_tok tok;
636: size_t sz;
637: unsigned int slot;
1.85 kristaps 638:
1.295 schwarze 639: htab = mandoc_malloc(sizeof(*htab));
640: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 641:
1.295 schwarze 642: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 643: if (roff_name[tok] == NULL)
644: continue;
1.295 schwarze 645: sz = strlen(roff_name[tok]);
646: req = mandoc_malloc(sizeof(*req) + sz + 1);
647: req->tok = tok;
648: memcpy(req->name, roff_name[tok], sz + 1);
649: slot = ohash_qlookup(htab, req->name);
650: ohash_insert(htab, slot, req);
1.85 kristaps 651: }
1.295 schwarze 652: return htab;
1.85 kristaps 653: }
654:
1.295 schwarze 655: void
656: roffhash_free(struct ohash *htab)
1.67 kristaps 657: {
1.295 schwarze 658: struct roffreq *req;
659: unsigned int slot;
1.67 kristaps 660:
1.295 schwarze 661: if (htab == NULL)
662: return;
663: for (req = ohash_first(htab, &slot); req != NULL;
664: req = ohash_next(htab, &slot))
665: free(req);
666: ohash_delete(htab);
667: free(htab);
668: }
669:
670: enum roff_tok
671: roffhash_find(struct ohash *htab, const char *name, size_t sz)
672: {
673: struct roffreq *req;
674: const char *end;
675:
676: if (sz) {
677: end = name + sz;
678: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
679: } else
680: req = ohash_find(htab, ohash_qlookup(htab, name));
681: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 682: }
683:
1.266 schwarze 684: /* --- stack of request blocks -------------------------------------------- */
685:
1.67 kristaps 686: /*
687: * Pop the current node off of the stack of roff instructions currently
688: * pending.
689: */
1.340 schwarze 690: static int
1.67 kristaps 691: roffnode_pop(struct roff *r)
692: {
693: struct roffnode *p;
1.340 schwarze 694: int inloop;
1.67 kristaps 695:
1.207 schwarze 696: p = r->last;
1.340 schwarze 697: inloop = p->tok == ROFF_while;
698: r->last = p->parent;
1.106 kristaps 699: free(p->name);
700: free(p->end);
1.67 kristaps 701: free(p);
1.340 schwarze 702: return inloop;
1.67 kristaps 703: }
704:
705: /*
706: * Push a roff node onto the instruction stack. This must later be
707: * removed with roffnode_pop().
708: */
1.98 schwarze 709: static void
1.294 schwarze 710: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 711: int line, int col)
1.67 kristaps 712: {
713: struct roffnode *p;
714:
1.98 schwarze 715: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 716: p->tok = tok;
1.106 kristaps 717: if (name)
718: p->name = mandoc_strdup(name);
1.67 kristaps 719: p->parent = r->last;
720: p->line = line;
721: p->col = col;
1.198 schwarze 722: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 723:
724: r->last = p;
725: }
726:
1.266 schwarze 727: /* --- roff parser state data management ---------------------------------- */
728:
1.67 kristaps 729: static void
730: roff_free1(struct roff *r)
731: {
1.167 kristaps 732: int i;
1.67 kristaps 733:
1.346 schwarze 734: tbl_free(r->first_tbl);
1.113 kristaps 735: r->first_tbl = r->last_tbl = r->tbl = NULL;
736:
1.347 schwarze 737: eqn_free(r->last_eqn);
1.319 schwarze 738: r->last_eqn = r->eqn = NULL;
1.125 kristaps 739:
1.339 schwarze 740: while (r->mstackpos >= 0)
741: roff_userret(r);
742:
1.67 kristaps 743: while (r->last)
744: roffnode_pop(r);
1.109 kristaps 745:
1.223 schwarze 746: free (r->rstack);
747: r->rstack = NULL;
748: r->rstacksz = 0;
749: r->rstackpos = -1;
750:
751: roff_freereg(r->regtab);
752: r->regtab = NULL;
753:
1.167 kristaps 754: roff_freestr(r->strtab);
1.306 schwarze 755: roff_freestr(r->rentab);
1.167 kristaps 756: roff_freestr(r->xmbtab);
1.306 schwarze 757: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 758:
759: if (r->xtab)
760: for (i = 0; i < 128; i++)
761: free(r->xtab[i].p);
762: free(r->xtab);
763: r->xtab = NULL;
1.67 kristaps 764: }
765:
766: void
767: roff_reset(struct roff *r)
768: {
769: roff_free1(r);
1.227 schwarze 770: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 771: r->control = '\0';
772: r->escape = '\\';
1.307 schwarze 773: roffce_lines = 0;
774: roffce_node = NULL;
775: roffit_lines = 0;
776: roffit_macro = NULL;
1.67 kristaps 777: }
778:
779: void
780: roff_free(struct roff *r)
781: {
1.339 schwarze 782: int i;
783:
1.67 kristaps 784: roff_free1(r);
1.339 schwarze 785: for (i = 0; i < r->mstacksz; i++)
786: free(r->mstack[i].argv);
787: free(r->mstack);
1.295 schwarze 788: roffhash_free(r->reqtab);
1.67 kristaps 789: free(r);
790: }
791:
792: struct roff *
1.351 schwarze 793: roff_alloc(int options)
1.67 kristaps 794: {
795: struct roff *r;
796:
1.98 schwarze 797: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 798: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 799: r->options = options;
1.227 schwarze 800: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 801: r->mstackpos = -1;
1.82 kristaps 802: r->rstackpos = -1;
1.303 schwarze 803: r->escape = '\\';
1.277 schwarze 804: return r;
1.265 schwarze 805: }
806:
1.266 schwarze 807: /* --- syntax tree state data management ---------------------------------- */
808:
1.265 schwarze 809: static void
810: roff_man_free1(struct roff_man *man)
811: {
1.356 schwarze 812: if (man->meta.first != NULL)
813: roff_node_delete(man, man->meta.first);
1.265 schwarze 814: free(man->meta.msec);
815: free(man->meta.vol);
816: free(man->meta.os);
817: free(man->meta.arch);
818: free(man->meta.title);
819: free(man->meta.name);
820: free(man->meta.date);
1.356 schwarze 821: free(man->meta.sodest);
1.265 schwarze 822: }
823:
1.357 schwarze 824: void
825: roff_state_reset(struct roff_man *man)
826: {
827: man->last = man->meta.first;
828: man->last_es = NULL;
829: man->flags = 0;
830: man->lastsec = man->lastnamed = SEC_NONE;
831: man->next = ROFF_NEXT_CHILD;
832: roff_setreg(man->roff, "nS", 0, '=');
833: }
834:
1.265 schwarze 835: static void
836: roff_man_alloc1(struct roff_man *man)
837: {
838: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 839: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
840: man->meta.first->type = ROFFT_ROOT;
841: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 842: roff_state_reset(man);
1.265 schwarze 843: }
844:
845: void
846: roff_man_reset(struct roff_man *man)
847: {
848: roff_man_free1(man);
849: roff_man_alloc1(man);
850: }
851:
852: void
853: roff_man_free(struct roff_man *man)
854: {
855: roff_man_free1(man);
856: free(man);
857: }
858:
859: struct roff_man *
1.351 schwarze 860: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 861: {
862: struct roff_man *man;
863:
864: man = mandoc_calloc(1, sizeof(*man));
865: man->roff = roff;
1.316 schwarze 866: man->os_s = os_s;
1.265 schwarze 867: man->quick = quick;
868: roff_man_alloc1(man);
1.296 schwarze 869: roff->man = man;
1.277 schwarze 870: return man;
1.67 kristaps 871: }
872:
1.266 schwarze 873: /* --- syntax tree handling ----------------------------------------------- */
874:
875: struct roff_node *
876: roff_node_alloc(struct roff_man *man, int line, int pos,
877: enum roff_type type, int tok)
878: {
879: struct roff_node *n;
880:
881: n = mandoc_calloc(1, sizeof(*n));
882: n->line = line;
883: n->pos = pos;
884: n->tok = tok;
885: n->type = type;
886: n->sec = man->lastsec;
887:
888: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 889: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 890: else
1.285 schwarze 891: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 892: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 893: n->flags |= NODE_NOFILL;
894: else
895: n->flags &= ~NODE_NOFILL;
1.266 schwarze 896: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 897: n->flags |= NODE_LINE;
1.266 schwarze 898: man->flags &= ~MDOC_NEWLINE;
899:
1.277 schwarze 900: return n;
1.266 schwarze 901: }
902:
903: void
904: roff_node_append(struct roff_man *man, struct roff_node *n)
905: {
906:
907: switch (man->next) {
908: case ROFF_NEXT_SIBLING:
1.281 schwarze 909: if (man->last->next != NULL) {
910: n->next = man->last->next;
911: man->last->next->prev = n;
912: } else
913: man->last->parent->last = n;
1.266 schwarze 914: man->last->next = n;
915: n->prev = man->last;
916: n->parent = man->last->parent;
917: break;
918: case ROFF_NEXT_CHILD:
1.287 schwarze 919: if (man->last->child != NULL) {
920: n->next = man->last->child;
921: man->last->child->prev = n;
922: } else
923: man->last->last = n;
1.266 schwarze 924: man->last->child = n;
925: n->parent = man->last;
926: break;
927: default:
928: abort();
929: }
1.282 schwarze 930: man->last = n;
1.266 schwarze 931:
932: switch (n->type) {
933: case ROFFT_HEAD:
934: n->parent->head = n;
935: break;
936: case ROFFT_BODY:
1.282 schwarze 937: if (n->end != ENDBODY_NOT)
938: return;
1.266 schwarze 939: n->parent->body = n;
940: break;
941: case ROFFT_TAIL:
942: n->parent->tail = n;
943: break;
944: default:
1.282 schwarze 945: return;
1.266 schwarze 946: }
1.282 schwarze 947:
948: /*
949: * Copy over the normalised-data pointer of our parent. Not
950: * everybody has one, but copying a null pointer is fine.
951: */
952:
953: n->norm = n->parent->norm;
954: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 955: }
956:
1.267 schwarze 957: void
958: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
959: {
960: struct roff_node *n;
961:
962: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
963: n->string = roff_strdup(man->roff, word);
964: roff_node_append(man, n);
1.286 schwarze 965: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 966: man->next = ROFF_NEXT_SIBLING;
967: }
968:
969: void
970: roff_word_append(struct roff_man *man, const char *word)
971: {
972: struct roff_node *n;
973: char *addstr, *newstr;
974:
975: n = man->last;
976: addstr = roff_strdup(man->roff, word);
977: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
978: free(addstr);
979: free(n->string);
980: n->string = newstr;
981: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 982: }
983:
984: void
985: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
986: {
987: struct roff_node *n;
988:
989: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
990: roff_node_append(man, n);
991: man->next = ROFF_NEXT_CHILD;
992: }
993:
994: struct roff_node *
995: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
996: {
997: struct roff_node *n;
998:
999: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1000: roff_node_append(man, n);
1001: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1002: return n;
1.267 schwarze 1003: }
1004:
1.266 schwarze 1005: struct roff_node *
1006: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1007: {
1008: struct roff_node *n;
1009:
1010: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1011: roff_node_append(man, n);
1012: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1013: return n;
1.266 schwarze 1014: }
1015:
1016: struct roff_node *
1017: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1018: {
1019: struct roff_node *n;
1020:
1021: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1022: roff_node_append(man, n);
1023: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1024: return n;
1.267 schwarze 1025: }
1026:
1.321 schwarze 1027: static void
1.346 schwarze 1028: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1029: {
1030: struct roff_node *n;
1.346 schwarze 1031: struct tbl_span *span;
1.267 schwarze 1032:
1.356 schwarze 1033: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1034: man_breakscope(man, ROFF_TS);
1.321 schwarze 1035: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1036: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1037: n->span = span;
1038: roff_node_append(man, n);
1039: n->flags |= NODE_VALID | NODE_ENDED;
1040: man->next = ROFF_NEXT_SIBLING;
1041: }
1.266 schwarze 1042: }
1043:
1044: void
1045: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1046: {
1047:
1048: /* Adjust siblings. */
1049:
1050: if (n->prev)
1051: n->prev->next = n->next;
1052: if (n->next)
1053: n->next->prev = n->prev;
1054:
1055: /* Adjust parent. */
1056:
1057: if (n->parent != NULL) {
1058: if (n->parent->child == n)
1059: n->parent->child = n->next;
1060: if (n->parent->last == n)
1061: n->parent->last = n->prev;
1062: }
1063:
1064: /* Adjust parse point. */
1065:
1066: if (man == NULL)
1067: return;
1068: if (man->last == n) {
1069: if (n->prev == NULL) {
1070: man->last = n->parent;
1071: man->next = ROFF_NEXT_CHILD;
1072: } else {
1073: man->last = n->prev;
1074: man->next = ROFF_NEXT_SIBLING;
1075: }
1076: }
1.356 schwarze 1077: if (man->meta.first == n)
1078: man->meta.first = NULL;
1.344 schwarze 1079: }
1080:
1081: void
1082: roff_node_relink(struct roff_man *man, struct roff_node *n)
1083: {
1084: roff_node_unlink(man, n);
1085: n->prev = n->next = NULL;
1086: roff_node_append(man, n);
1.266 schwarze 1087: }
1088:
1089: void
1090: roff_node_free(struct roff_node *n)
1091: {
1092:
1093: if (n->args != NULL)
1094: mdoc_argv_free(n->args);
1095: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1096: free(n->norm);
1.347 schwarze 1097: eqn_box_free(n->eqn);
1.266 schwarze 1098: free(n->string);
1099: free(n);
1100: }
1101:
1102: void
1103: roff_node_delete(struct roff_man *man, struct roff_node *n)
1104: {
1105:
1106: while (n->child != NULL)
1107: roff_node_delete(man, n->child);
1108: roff_node_unlink(man, n);
1109: roff_node_free(n);
1.269 schwarze 1110: }
1111:
1112: void
1113: deroff(char **dest, const struct roff_node *n)
1114: {
1115: char *cp;
1116: size_t sz;
1117:
1118: if (n->type != ROFFT_TEXT) {
1119: for (n = n->child; n != NULL; n = n->next)
1120: deroff(dest, n);
1121: return;
1122: }
1123:
1.288 schwarze 1124: /* Skip leading whitespace. */
1.269 schwarze 1125:
1.288 schwarze 1126: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1127: if (cp[0] == '\\' && cp[1] != '\0' &&
1128: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1129: cp++;
1.288 schwarze 1130: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1131: break;
1132: }
1133:
1.289 schwarze 1134: /* Skip trailing backslash. */
1135:
1136: sz = strlen(cp);
1.290 schwarze 1137: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1138: sz--;
1139:
1.269 schwarze 1140: /* Skip trailing whitespace. */
1141:
1.289 schwarze 1142: for (; sz; sz--)
1.269 schwarze 1143: if ( ! isspace((unsigned char)cp[sz-1]))
1144: break;
1145:
1146: /* Skip empty strings. */
1147:
1148: if (sz == 0)
1149: return;
1150:
1151: if (*dest == NULL) {
1152: *dest = mandoc_strndup(cp, sz);
1153: return;
1154: }
1155:
1156: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1157: free(*dest);
1158: *dest = cp;
1.266 schwarze 1159: }
1160:
1161: /* --- main functions of the roff parser ---------------------------------- */
1162:
1.94 kristaps 1163: /*
1.355 schwarze 1164: * In the current line, expand escape sequences that produce parsable
1165: * input text. Also check the syntax of the remaining escape sequences,
1166: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1167: */
1.340 schwarze 1168: static int
1.355 schwarze 1169: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1170: {
1.339 schwarze 1171: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1172: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1173: struct roff_node *n; /* used for header comments */
1.205 schwarze 1174: const char *start; /* start of the string to process */
1.209 schwarze 1175: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1176: const char *esct; /* type of esccape sequence */
1.328 schwarze 1177: char *ep; /* end of comment string */
1.108 schwarze 1178: const char *stnam; /* start of the name, after "[(*" */
1179: const char *cp; /* end of the name, e.g. before ']' */
1180: const char *res; /* the string to be substituted */
1.238 schwarze 1181: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1182: size_t maxl; /* expected length of the escape name */
1183: size_t naml; /* actual length of the escape name */
1.339 schwarze 1184: size_t asz; /* length of the replacement */
1185: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1186: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1187: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1188: int npos; /* position in numeric expression */
1.218 schwarze 1189: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1190: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1191: int done; /* no more input available */
1.315 schwarze 1192: int deftype; /* type of definition to paste */
1.323 schwarze 1193: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1194: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1195: char sign; /* increment number register */
1.206 schwarze 1196: char term; /* character terminating the escape */
1.94 kristaps 1197:
1.303 schwarze 1198: /* Search forward for comments. */
1199:
1200: done = 0;
1201: start = buf->buf + pos;
1202: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1203: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1204: continue;
1205: stesc++;
1206: if (*stesc != '"' && *stesc != '#')
1207: continue;
1.313 schwarze 1208:
1209: /* Comment found, look for RCS id. */
1210:
1.323 schwarze 1211: rcsid = 0;
1.313 schwarze 1212: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1213: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1214: cp += 8;
1215: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1216: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1217: cp += 7;
1218: }
1219: if (cp != NULL &&
1220: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1221: strchr(cp, '$') != NULL) {
1.323 schwarze 1222: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1223: mandoc_msg(MANDOCERR_RCS_REP, ln,
1224: (int)(stesc - buf->buf) + 1,
1225: "%s", stesc + 1);
1.323 schwarze 1226: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1227: }
1.313 schwarze 1228:
1229: /* Handle trailing whitespace. */
1230:
1.328 schwarze 1231: ep = strchr(stesc--, '\0') - 1;
1232: if (*ep == '\n') {
1.303 schwarze 1233: done = 1;
1.328 schwarze 1234: ep--;
1.303 schwarze 1235: }
1.328 schwarze 1236: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1237: mandoc_msg(MANDOCERR_SPACE_EOL,
1238: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1239:
1240: /*
1241: * Save comments preceding the title macro
1242: * in the syntax tree.
1243: */
1244:
1.355 schwarze 1245: if (newesc != ASCII_ESC && r->format == 0) {
1.328 schwarze 1246: while (*ep == ' ' || *ep == '\t')
1247: ep--;
1248: ep[1] = '\0';
1249: n = roff_node_alloc(r->man,
1250: ln, stesc + 1 - buf->buf,
1251: ROFFT_COMMENT, TOKEN_NONE);
1252: n->string = mandoc_strdup(stesc + 2);
1253: roff_node_append(r->man, n);
1254: n->flags |= NODE_VALID | NODE_ENDED;
1255: r->man->next = ROFF_NEXT_SIBLING;
1256: }
1257:
1.334 schwarze 1258: /* Line continuation with comment. */
1259:
1260: if (stesc[1] == '#') {
1261: *stesc = '\0';
1.340 schwarze 1262: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1263: }
1264:
1265: /* Discard normal comments. */
1.328 schwarze 1266:
1.335 schwarze 1267: while (stesc > start && stesc[-1] == ' ' &&
1268: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1269: stesc--;
1270: *stesc = '\0';
1271: break;
1272: }
1273: if (stesc == start)
1274: return ROFF_CONT;
1275: stesc--;
1276:
1277: /* Notice the end of the input. */
1278:
1279: if (*stesc == '\n') {
1280: *stesc-- = '\0';
1281: done = 1;
1282: }
1283:
1.170 schwarze 1284: expand_count = 0;
1.303 schwarze 1285: while (stesc >= start) {
1.355 schwarze 1286: if (*stesc != newesc) {
1.170 schwarze 1287:
1.355 schwarze 1288: /*
1289: * If we have a non-standard escape character,
1290: * escape literal backslashes because all
1291: * processing in subsequent functions uses
1292: * the standard escaping rules.
1293: */
1.205 schwarze 1294:
1.355 schwarze 1295: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1296: *stesc = '\0';
1297: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1298: buf->buf, stesc + 1) + 1;
1299: start = nbuf + pos;
1300: stesc = nbuf + (stesc - buf->buf);
1301: free(buf->buf);
1302: buf->buf = nbuf;
1303: }
1.355 schwarze 1304:
1305: /* Search backwards for the next escape. */
1306:
1.303 schwarze 1307: stesc--;
1.205 schwarze 1308: continue;
1.303 schwarze 1309: }
1.205 schwarze 1310:
1311: /* If it is escaped, skip it. */
1312:
1313: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1314: if (*cp != r->escape)
1.205 schwarze 1315: break;
1316:
1.238 schwarze 1317: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1318: while (stesc > cp)
1319: *stesc-- = '\\';
1.205 schwarze 1320: continue;
1.303 schwarze 1321: } else if (stesc[1] != '\0') {
1322: *stesc = '\\';
1323: } else {
1324: *stesc-- = '\0';
1325: if (done)
1326: continue;
1327: else
1.340 schwarze 1328: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1329: }
1.108 schwarze 1330:
1.206 schwarze 1331: /* Decide whether to expand or to check only. */
1.108 schwarze 1332:
1.206 schwarze 1333: term = '\0';
1.205 schwarze 1334: cp = stesc + 1;
1.352 schwarze 1335: if (*cp == 'E')
1336: cp++;
1337: esct = cp;
1338: switch (*esct) {
1.207 schwarze 1339: case '*':
1.339 schwarze 1340: case '$':
1.181 schwarze 1341: res = NULL;
1342: break;
1.207 schwarze 1343: case 'B':
1344: case 'w':
1.206 schwarze 1345: term = cp[1];
1346: /* FALLTHROUGH */
1.207 schwarze 1347: case 'n':
1.327 schwarze 1348: sign = cp[1];
1349: if (sign == '+' || sign == '-')
1350: cp++;
1.181 schwarze 1351: res = ubuf;
1352: break;
1353: default:
1.352 schwarze 1354: err = MANDOCERR_OK;
1355: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1356: case ESCAPE_SPECIAL:
1357: if (mchars_spec2cp(stnam, inaml) >= 0)
1358: break;
1359: /* FALLTHROUGH */
1360: case ESCAPE_ERROR:
1361: err = MANDOCERR_ESC_BAD;
1362: break;
1363: case ESCAPE_UNDEF:
1364: err = MANDOCERR_ESC_UNDEF;
1365: break;
1366: case ESCAPE_UNSUPP:
1367: err = MANDOCERR_ESC_UNSUPP;
1368: break;
1369: default:
1370: break;
1371: }
1372: if (err != MANDOCERR_OK)
1373: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1374: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1375: stesc--;
1.205 schwarze 1376: continue;
1.152 kristaps 1377: }
1378:
1.205 schwarze 1379: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1380: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1381: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1382: return ROFF_IGN;
1.205 schwarze 1383: }
1.108 schwarze 1384:
1385: /*
1386: * The third character decides the length
1.181 schwarze 1387: * of the name of the string or register.
1.108 schwarze 1388: * Save a pointer to the name.
1389: */
1390:
1.238 schwarze 1391: if (term == '\0') {
1.206 schwarze 1392: switch (*++cp) {
1.207 schwarze 1393: case '\0':
1.206 schwarze 1394: maxl = 0;
1395: break;
1.207 schwarze 1396: case '(':
1.206 schwarze 1397: cp++;
1398: maxl = 2;
1399: break;
1.207 schwarze 1400: case '[':
1.206 schwarze 1401: cp++;
1402: term = ']';
1403: maxl = 0;
1404: break;
1405: default:
1406: maxl = 1;
1407: break;
1408: }
1409: } else {
1410: cp += 2;
1.94 kristaps 1411: maxl = 0;
1412: }
1.108 schwarze 1413: stnam = cp;
1.94 kristaps 1414:
1.108 schwarze 1415: /* Advance to the end of the name. */
1.94 kristaps 1416:
1.253 schwarze 1417: naml = 0;
1.218 schwarze 1418: arg_complete = 1;
1.253 schwarze 1419: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1420: if (*cp == '\0') {
1.350 schwarze 1421: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1422: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1423: arg_complete = 0;
1.206 schwarze 1424: break;
1.153 kristaps 1425: }
1.238 schwarze 1426: if (maxl == 0 && *cp == term) {
1.206 schwarze 1427: cp++;
1.253 schwarze 1428: break;
1429: }
1.352 schwarze 1430: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1431: naml++;
1432: continue;
1433: }
1434: switch (mandoc_escape(&cp, NULL, NULL)) {
1435: case ESCAPE_SPECIAL:
1436: case ESCAPE_UNICODE:
1437: case ESCAPE_NUMBERED:
1.352 schwarze 1438: case ESCAPE_UNDEF:
1.253 schwarze 1439: case ESCAPE_OVERSTRIKE:
1440: naml++;
1441: break;
1442: default:
1.94 kristaps 1443: break;
1.206 schwarze 1444: }
1.94 kristaps 1445: }
1446:
1.108 schwarze 1447: /*
1448: * Retrieve the replacement string; if it is
1449: * undefined, resume searching for escapes.
1450: */
1451:
1.352 schwarze 1452: switch (*esct) {
1.207 schwarze 1453: case '*':
1.315 schwarze 1454: if (arg_complete) {
1455: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1456: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1457:
1458: /*
1459: * If not overriden, let \*(.T
1460: * through to the formatters.
1461: */
1462:
1463: if (res == NULL && naml == 2 &&
1464: stnam[0] == '.' && stnam[1] == 'T') {
1465: roff_setstrn(&r->strtab,
1466: ".T", 2, NULL, 0, 0);
1467: stesc--;
1468: continue;
1469: }
1.315 schwarze 1470: }
1.206 schwarze 1471: break;
1.339 schwarze 1472: case '$':
1473: if (r->mstackpos < 0) {
1.350 schwarze 1474: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1475: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1476: break;
1477: }
1478: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1479: npos = esct[1] - '1';
1.339 schwarze 1480: if (npos >= 0 && npos <= 8) {
1481: res = npos < ctx->argc ?
1482: ctx->argv[npos] : "";
1483: break;
1484: }
1.352 schwarze 1485: if (esct[1] == '*')
1.339 schwarze 1486: quote_args = 0;
1.352 schwarze 1487: else if (esct[1] == '@')
1.339 schwarze 1488: quote_args = 1;
1489: else {
1.350 schwarze 1490: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1491: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1492: break;
1493: }
1494: asz = 0;
1495: for (npos = 0; npos < ctx->argc; npos++) {
1496: if (npos)
1497: asz++; /* blank */
1498: if (quote_args)
1499: asz += 2; /* quotes */
1500: asz += strlen(ctx->argv[npos]);
1501: }
1502: if (asz != 3) {
1503: rsz = buf->sz - (stesc - buf->buf) - 3;
1504: if (asz < 3)
1505: memmove(stesc + asz, stesc + 3, rsz);
1506: buf->sz += asz - 3;
1507: nbuf = mandoc_realloc(buf->buf, buf->sz);
1508: start = nbuf + pos;
1509: stesc = nbuf + (stesc - buf->buf);
1510: buf->buf = nbuf;
1511: if (asz > 3)
1512: memmove(stesc + asz, stesc + 3, rsz);
1513: }
1514: for (npos = 0; npos < ctx->argc; npos++) {
1515: if (npos)
1516: *stesc++ = ' ';
1517: if (quote_args)
1518: *stesc++ = '"';
1519: cp = ctx->argv[npos];
1520: while (*cp != '\0')
1521: *stesc++ = *cp++;
1522: if (quote_args)
1523: *stesc++ = '"';
1524: }
1525: continue;
1.207 schwarze 1526: case 'B':
1.206 schwarze 1527: npos = 0;
1.218 schwarze 1528: ubuf[0] = arg_complete &&
1.261 schwarze 1529: roff_evalnum(r, ln, stnam, &npos,
1530: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1531: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1532: ubuf[1] = '\0';
1533: break;
1.207 schwarze 1534: case 'n':
1.218 schwarze 1535: if (arg_complete)
1536: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1537: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1538: else
1539: ubuf[0] = '\0';
1.206 schwarze 1540: break;
1.207 schwarze 1541: case 'w':
1.218 schwarze 1542: /* use even incomplete args */
1.208 schwarze 1543: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1544: 24 * (int)naml);
1545: break;
1546: }
1.94 kristaps 1547:
1.238 schwarze 1548: if (res == NULL) {
1.352 schwarze 1549: if (*esct == '*')
1.350 schwarze 1550: mandoc_msg(MANDOCERR_STR_UNDEF,
1551: ln, (int)(stesc - buf->buf),
1.339 schwarze 1552: "%.*s", (int)naml, stnam);
1.142 kristaps 1553: res = "";
1.246 schwarze 1554: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1555: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1556: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1557: return ROFF_IGN;
1.94 kristaps 1558: }
1559:
1.108 schwarze 1560: /* Replace the escape sequence by the string. */
1561:
1.209 schwarze 1562: *stesc = '\0';
1.238 schwarze 1563: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1564: buf->buf, res, cp) + 1;
1.94 kristaps 1565:
1.205 schwarze 1566: /* Prepare for the next replacement. */
1.94 kristaps 1567:
1.205 schwarze 1568: start = nbuf + pos;
1.238 schwarze 1569: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1570: free(buf->buf);
1571: buf->buf = nbuf;
1.154 kristaps 1572: }
1.277 schwarze 1573: return ROFF_CONT;
1.154 kristaps 1574: }
1.353 schwarze 1575:
1576: /*
1577: * Parse a quoted or unquoted roff-style request or macro argument.
1578: * Return a pointer to the parsed argument, which is either the original
1579: * pointer or advanced by one byte in case the argument is quoted.
1580: * NUL-terminate the argument in place.
1581: * Collapse pairs of quotes inside quoted arguments.
1582: * Advance the argument pointer to the next argument,
1583: * or to the NUL byte terminating the argument line.
1584: */
1585: char *
1.355 schwarze 1586: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1587: {
1.355 schwarze 1588: struct buf buf;
1589: char *cp, *start;
1590: int newesc, pairs, quoted, white;
1.353 schwarze 1591:
1592: /* Quoting can only start with a new word. */
1593: start = *cpp;
1594: quoted = 0;
1595: if ('"' == *start) {
1596: quoted = 1;
1597: start++;
1598: }
1599:
1.355 schwarze 1600: newesc = pairs = white = 0;
1.353 schwarze 1601: for (cp = start; '\0' != *cp; cp++) {
1602:
1603: /*
1604: * Move the following text left
1605: * after quoted quotes and after "\\" and "\t".
1606: */
1607: if (pairs)
1608: cp[-pairs] = cp[0];
1609:
1610: if ('\\' == cp[0]) {
1611: /*
1612: * In copy mode, translate double to single
1613: * backslashes and backslash-t to literal tabs.
1614: */
1615: switch (cp[1]) {
1616: case 'a':
1617: case 't':
1.354 schwarze 1618: cp[-pairs] = '\t';
1.355 schwarze 1619: pairs++;
1620: cp++;
1621: break;
1.353 schwarze 1622: case '\\':
1.355 schwarze 1623: newesc = 1;
1624: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1625: pairs++;
1626: cp++;
1627: break;
1628: case ' ':
1629: /* Skip escaped blanks. */
1630: if (0 == quoted)
1631: cp++;
1632: break;
1633: default:
1634: break;
1635: }
1636: } else if (0 == quoted) {
1637: if (' ' == cp[0]) {
1638: /* Unescaped blanks end unquoted args. */
1639: white = 1;
1640: break;
1641: }
1642: } else if ('"' == cp[0]) {
1643: if ('"' == cp[1]) {
1644: /* Quoted quotes collapse. */
1645: pairs++;
1646: cp++;
1647: } else {
1648: /* Unquoted quotes end quoted args. */
1649: quoted = 2;
1650: break;
1651: }
1652: }
1653: }
1654:
1655: /* Quoted argument without a closing quote. */
1656: if (1 == quoted)
1657: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1658:
1659: /* NUL-terminate this argument and move to the next one. */
1660: if (pairs)
1661: cp[-pairs] = '\0';
1662: if ('\0' != *cp) {
1663: *cp++ = '\0';
1664: while (' ' == *cp)
1665: cp++;
1666: }
1667: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1668: *cpp = cp;
1669:
1670: if ('\0' == *cp && (white || ' ' == cp[-1]))
1671: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1672:
1.355 schwarze 1673: start = mandoc_strdup(start);
1674: if (newesc == 0)
1675: return start;
1676:
1677: buf.buf = start;
1678: buf.sz = strlen(start) + 1;
1679: buf.next = NULL;
1680: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1681: free(buf.buf);
1682: buf.buf = mandoc_strdup("");
1683: }
1684: return buf.buf;
1.353 schwarze 1685: }
1686:
1.154 kristaps 1687:
1688: /*
1.275 schwarze 1689: * Process text streams.
1.154 kristaps 1690: */
1.340 schwarze 1691: static int
1.305 schwarze 1692: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1693: {
1694: size_t sz;
1695: const char *start;
1.178 schwarze 1696: char *p;
1697: int isz;
1.154 kristaps 1698: enum mandoc_esc esc;
1699:
1.275 schwarze 1700: /* Spring the input line trap. */
1701:
1702: if (roffit_lines == 1) {
1703: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1704: free(buf->buf);
1705: buf->buf = p;
1706: buf->sz = isz + 1;
1707: *offs = 0;
1708: free(roffit_macro);
1709: roffit_lines = 0;
1.277 schwarze 1710: return ROFF_REPARSE;
1.275 schwarze 1711: } else if (roffit_lines > 1)
1712: --roffit_lines;
1713:
1.305 schwarze 1714: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1715: if (roffce_lines < 1) {
1716: r->man->last = roffce_node;
1717: r->man->next = ROFF_NEXT_SIBLING;
1718: roffce_lines = 0;
1719: roffce_node = NULL;
1720: } else
1721: roffce_lines--;
1722: }
1723:
1.275 schwarze 1724: /* Convert all breakable hyphens into ASCII_HYPH. */
1725:
1.238 schwarze 1726: start = p = buf->buf + pos;
1.154 kristaps 1727:
1.238 schwarze 1728: while (*p != '\0') {
1.154 kristaps 1729: sz = strcspn(p, "-\\");
1730: p += sz;
1731:
1.238 schwarze 1732: if (*p == '\0')
1.159 kristaps 1733: break;
1734:
1.238 schwarze 1735: if (*p == '\\') {
1.154 kristaps 1736: /* Skip over escapes. */
1737: p++;
1.189 schwarze 1738: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1739: if (esc == ESCAPE_ERROR)
1.154 kristaps 1740: break;
1.264 schwarze 1741: while (*p == '-')
1742: p++;
1.155 kristaps 1743: continue;
1.159 kristaps 1744: } else if (p == start) {
1.158 kristaps 1745: p++;
1.155 kristaps 1746: continue;
1.158 kristaps 1747: }
1.155 kristaps 1748:
1.171 schwarze 1749: if (isalpha((unsigned char)p[-1]) &&
1750: isalpha((unsigned char)p[1]))
1.155 kristaps 1751: *p = ASCII_HYPH;
1752: p++;
1.94 kristaps 1753: }
1.277 schwarze 1754: return ROFF_CONT;
1.94 kristaps 1755: }
1756:
1.340 schwarze 1757: int
1.238 schwarze 1758: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1759: {
1.294 schwarze 1760: enum roff_tok t;
1.340 schwarze 1761: int e;
1.238 schwarze 1762: int pos; /* parse point */
1.243 schwarze 1763: int spos; /* saved parse point for messages */
1.238 schwarze 1764: int ppos; /* original offset in buf->buf */
1765: int ctl; /* macro line (boolean) */
1766:
1767: ppos = pos = *offs;
1.79 kristaps 1768:
1.230 schwarze 1769: /* Handle in-line equation delimiters. */
1770:
1.236 schwarze 1771: if (r->tbl == NULL &&
1772: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1773: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1774: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1775: if (e == ROFF_REPARSE)
1.277 schwarze 1776: return e;
1.230 schwarze 1777: assert(e == ROFF_CONT);
1778: }
1779:
1780: /* Expand some escape sequences. */
1.94 kristaps 1781:
1.355 schwarze 1782: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1783: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1784: return e;
1.238 schwarze 1785: assert(e == ROFF_CONT);
1.94 kristaps 1786:
1.238 schwarze 1787: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1788:
1.94 kristaps 1789: /*
1.79 kristaps 1790: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1791: * text through the macro's filter.
1792: * Equations process all content themselves.
1793: * Tables process almost all content themselves, but we want
1794: * to warn about macros before passing it there.
1.79 kristaps 1795: */
1.74 kristaps 1796:
1.252 schwarze 1797: if (r->last != NULL && ! ctl) {
1.78 kristaps 1798: t = r->last->tok;
1.238 schwarze 1799: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1800: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1801: return e;
1.340 schwarze 1802: e &= ~ROFF_MASK;
1803: } else
1804: e = ROFF_IGN;
1.319 schwarze 1805: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1806: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1807: return e;
1.319 schwarze 1808: }
1.321 schwarze 1809: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1810: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1811: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1812: return e;
1.321 schwarze 1813: }
1.252 schwarze 1814: if ( ! ctl)
1.340 schwarze 1815: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1816:
1817: /* Skip empty request lines. */
1818:
1.238 schwarze 1819: if (buf->buf[pos] == '"') {
1.350 schwarze 1820: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1821: return ROFF_IGN;
1.238 schwarze 1822: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1823: return ROFF_IGN;
1.67 kristaps 1824:
1.79 kristaps 1825: /*
1826: * If a scope is open, go to the child handler for that macro,
1827: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1828: * Don't do so if an equation is open.
1.79 kristaps 1829: */
1.78 kristaps 1830:
1.79 kristaps 1831: if (r->last) {
1832: t = r->last->tok;
1.277 schwarze 1833: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1834: }
1.78 kristaps 1835:
1.243 schwarze 1836: /* No scope is open. This is a new request or macro. */
1837:
1838: spos = pos;
1839: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1840:
1841: /* Tables ignore most macros. */
1842:
1.308 schwarze 1843: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1844: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1845: mandoc_msg(MANDOCERR_TBLMACRO,
1846: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1847: if (t != TOKEN_NONE)
1.277 schwarze 1848: return ROFF_IGN;
1.257 schwarze 1849: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1850: pos++;
1.291 schwarze 1851: while (buf->buf[pos] == ' ')
1.257 schwarze 1852: pos++;
1.321 schwarze 1853: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1854: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1855: return ROFF_IGN;
1.243 schwarze 1856: }
1857:
1.305 schwarze 1858: /* For now, let high level macros abort .ce mode. */
1859:
1860: if (ctl && roffce_node != NULL &&
1.324 schwarze 1861: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1862: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1863: r->man->last = roffce_node;
1864: r->man->next = ROFF_NEXT_SIBLING;
1865: roffce_lines = 0;
1866: roffce_node = NULL;
1867: }
1868:
1.79 kristaps 1869: /*
1.243 schwarze 1870: * This is neither a roff request nor a user-defined macro.
1871: * Let the standard macro set parsers handle it.
1.79 kristaps 1872: */
1.67 kristaps 1873:
1.294 schwarze 1874: if (t == TOKEN_NONE)
1.277 schwarze 1875: return ROFF_CONT;
1.243 schwarze 1876:
1877: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1878:
1.296 schwarze 1879: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1880: }
1881:
1.339 schwarze 1882: /*
1883: * Internal interface function to tell the roff parser that execution
1884: * of the current macro ended. This is required because macro
1885: * definitions usually do not end with a .return request.
1886: */
1887: void
1888: roff_userret(struct roff *r)
1889: {
1890: struct mctx *ctx;
1891: int i;
1892:
1893: assert(r->mstackpos >= 0);
1894: ctx = r->mstack + r->mstackpos;
1895: for (i = 0; i < ctx->argc; i++)
1896: free(ctx->argv[i]);
1897: ctx->argc = 0;
1898: r->mstackpos--;
1899: }
1900:
1.117 kristaps 1901: void
1.74 kristaps 1902: roff_endparse(struct roff *r)
1903: {
1.321 schwarze 1904: if (r->last != NULL)
1.350 schwarze 1905: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1906: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1907:
1.321 schwarze 1908: if (r->eqn != NULL) {
1.350 schwarze 1909: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1910: r->eqn->node->line, r->eqn->node->pos, "EQ");
1911: eqn_parse(r->eqn);
1912: r->eqn = NULL;
1.125 kristaps 1913: }
1914:
1.321 schwarze 1915: if (r->tbl != NULL) {
1.346 schwarze 1916: tbl_end(r->tbl, 1);
1.321 schwarze 1917: r->tbl = NULL;
1.117 kristaps 1918: }
1.67 kristaps 1919: }
1920:
1921: /*
1922: * Parse a roff node's type from the input buffer. This must be in the
1923: * form of ".foo xxx" in the usual way.
1924: */
1.294 schwarze 1925: static enum roff_tok
1.214 schwarze 1926: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1927: {
1.214 schwarze 1928: char *cp;
1.106 kristaps 1929: const char *mac;
1930: size_t maclen;
1.315 schwarze 1931: int deftype;
1.294 schwarze 1932: enum roff_tok t;
1.67 kristaps 1933:
1.214 schwarze 1934: cp = buf + *pos;
1935:
1936: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1937: return TOKEN_NONE;
1.67 kristaps 1938:
1.214 schwarze 1939: mac = cp;
1940: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1941:
1.315 schwarze 1942: deftype = ROFFDEF_USER | ROFFDEF_REN;
1943: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1944: switch (deftype) {
1945: case ROFFDEF_USER:
1946: t = ROFF_USERDEF;
1947: break;
1948: case ROFFDEF_REN:
1949: t = ROFF_RENAMED;
1950: break;
1951: default:
1952: t = roffhash_find(r->reqtab, mac, maclen);
1953: break;
1954: }
1.294 schwarze 1955: if (t != TOKEN_NONE)
1.214 schwarze 1956: *pos = cp - buf;
1.325 schwarze 1957: else if (deftype == ROFFDEF_UNDEF) {
1958: /* Using an undefined macro defines it to be empty. */
1959: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1960: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1961: }
1.277 schwarze 1962: return t;
1.67 kristaps 1963: }
1964:
1.266 schwarze 1965: /* --- handling of request blocks ----------------------------------------- */
1966:
1.340 schwarze 1967: static int
1.76 kristaps 1968: roff_cblock(ROFF_ARGS)
1.67 kristaps 1969: {
1970:
1.79 kristaps 1971: /*
1972: * A block-close `..' should only be invoked as a child of an
1973: * ignore macro, otherwise raise a warning and just ignore it.
1974: */
1975:
1.238 schwarze 1976: if (r->last == NULL) {
1.350 schwarze 1977: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1978: return ROFF_IGN;
1.76 kristaps 1979: }
1.67 kristaps 1980:
1.81 kristaps 1981: switch (r->last->tok) {
1.207 schwarze 1982: case ROFF_am:
1.220 schwarze 1983: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1984: case ROFF_ami:
1985: case ROFF_de:
1.108 schwarze 1986: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1987: case ROFF_dei:
1988: case ROFF_ig:
1.81 kristaps 1989: break;
1990: default:
1.350 schwarze 1991: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1992: return ROFF_IGN;
1.76 kristaps 1993: }
1.67 kristaps 1994:
1.238 schwarze 1995: if (buf->buf[pos] != '\0')
1.350 schwarze 1996: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 1997: ".. %s", buf->buf + pos);
1.71 kristaps 1998:
1999: roffnode_pop(r);
1.76 kristaps 2000: roffnode_cleanscope(r);
1.277 schwarze 2001: return ROFF_IGN;
1.71 kristaps 2002:
1.67 kristaps 2003: }
2004:
1.340 schwarze 2005: static int
1.76 kristaps 2006: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2007: {
1.340 schwarze 2008: int inloop;
1.67 kristaps 2009:
1.340 schwarze 2010: inloop = 0;
2011: while (r->last != NULL) {
1.173 schwarze 2012: if (--r->last->endspan != 0)
1.76 kristaps 2013: break;
1.340 schwarze 2014: inloop += roffnode_pop(r);
1.76 kristaps 2015: }
1.340 schwarze 2016: return inloop;
1.67 kristaps 2017: }
2018:
1.340 schwarze 2019: static int
1.195 schwarze 2020: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2021: {
1.76 kristaps 2022: if (NULL == r->last) {
1.350 schwarze 2023: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2024: return 0;
1.76 kristaps 2025: }
2026:
1.82 kristaps 2027: switch (r->last->tok) {
1.207 schwarze 2028: case ROFF_el:
2029: case ROFF_ie:
2030: case ROFF_if:
1.340 schwarze 2031: case ROFF_while:
1.82 kristaps 2032: break;
2033: default:
1.350 schwarze 2034: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2035: return 0;
1.75 kristaps 2036: }
2037:
1.76 kristaps 2038: if (r->last->endspan > -1) {
1.350 schwarze 2039: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2040: return 0;
1.76 kristaps 2041: }
2042:
1.340 schwarze 2043: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2044: }
2045:
1.340 schwarze 2046: static int
1.80 kristaps 2047: roff_block(ROFF_ARGS)
1.76 kristaps 2048: {
1.315 schwarze 2049: const char *name, *value;
2050: char *call, *cp, *iname, *rname;
2051: size_t csz, namesz, rsz;
2052: int deftype;
1.106 kristaps 2053:
1.220 schwarze 2054: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2055:
1.238 schwarze 2056: if (tok == ROFF_de1)
1.220 schwarze 2057: tok = ROFF_de;
1.251 schwarze 2058: else if (tok == ROFF_dei1)
2059: tok = ROFF_dei;
1.238 schwarze 2060: else if (tok == ROFF_am1)
1.220 schwarze 2061: tok = ROFF_am;
1.251 schwarze 2062: else if (tok == ROFF_ami1)
2063: tok = ROFF_ami;
1.220 schwarze 2064:
2065: /* Parse the macro name argument. */
2066:
1.238 schwarze 2067: cp = buf->buf + pos;
2068: if (tok == ROFF_ig) {
1.220 schwarze 2069: iname = NULL;
2070: namesz = 0;
2071: } else {
2072: iname = cp;
2073: namesz = roff_getname(r, &cp, ln, ppos);
2074: iname[namesz] = '\0';
2075: }
1.107 kristaps 2076:
1.220 schwarze 2077: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2078:
1.238 schwarze 2079: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2080: deftype = ROFFDEF_USER;
2081: name = roff_getstrn(r, iname, namesz, &deftype);
2082: if (name == NULL) {
1.350 schwarze 2083: mandoc_msg(MANDOCERR_STR_UNDEF,
2084: ln, (int)(iname - buf->buf),
1.220 schwarze 2085: "%.*s", (int)namesz, iname);
2086: namesz = 0;
2087: } else
2088: namesz = strlen(name);
2089: } else
2090: name = iname;
1.107 kristaps 2091:
1.238 schwarze 2092: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2093: mandoc_msg(MANDOCERR_REQ_EMPTY,
2094: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2095: return ROFF_IGN;
1.220 schwarze 2096: }
1.80 kristaps 2097:
1.106 kristaps 2098: roffnode_push(r, tok, name, ln, ppos);
2099:
2100: /*
2101: * At the beginning of a `de' macro, clear the existing string
2102: * with the same name, if there is one. New content will be
1.193 schwarze 2103: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2104: */
1.107 kristaps 2105:
1.311 schwarze 2106: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2107: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2108: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2109: } else if (tok == ROFF_am || tok == ROFF_ami) {
2110: deftype = ROFFDEF_ANY;
2111: value = roff_getstrn(r, iname, namesz, &deftype);
2112: switch (deftype) { /* Before appending, ... */
2113: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2114: roff_setstrn(&r->strtab, name, namesz,
2115: value, strlen(value), 0);
2116: break;
2117: case ROFFDEF_REN: /* call original standard macro. */
2118: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2119: (int)strlen(value), value);
2120: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2121: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2122: free(call);
2123: break;
2124: case ROFFDEF_STD: /* rename and call standard macro. */
2125: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2126: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2127: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2128: (int)rsz, rname);
2129: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2130: free(call);
2131: free(rname);
2132: break;
2133: default:
2134: break;
2135: }
1.311 schwarze 2136: }
1.76 kristaps 2137:
1.238 schwarze 2138: if (*cp == '\0')
1.277 schwarze 2139: return ROFF_IGN;
1.78 kristaps 2140:
1.220 schwarze 2141: /* Get the custom end marker. */
1.107 kristaps 2142:
1.220 schwarze 2143: iname = cp;
1.213 schwarze 2144: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2145:
2146: /* Resolve the end marker if it is indirect. */
2147:
1.238 schwarze 2148: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2149: deftype = ROFFDEF_USER;
2150: name = roff_getstrn(r, iname, namesz, &deftype);
2151: if (name == NULL) {
1.350 schwarze 2152: mandoc_msg(MANDOCERR_STR_UNDEF,
2153: ln, (int)(iname - buf->buf),
1.220 schwarze 2154: "%.*s", (int)namesz, iname);
2155: namesz = 0;
2156: } else
2157: namesz = strlen(name);
2158: } else
2159: name = iname;
2160:
1.213 schwarze 2161: if (namesz)
2162: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2163:
1.238 schwarze 2164: if (*cp != '\0')
1.350 schwarze 2165: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2166: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2167:
1.277 schwarze 2168: return ROFF_IGN;
1.78 kristaps 2169: }
2170:
1.340 schwarze 2171: static int
1.80 kristaps 2172: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2173: {
1.294 schwarze 2174: enum roff_tok t;
1.79 kristaps 2175: int i, j;
2176:
2177: /*
2178: * First check whether a custom macro exists at this level. If
2179: * it does, then check against it. This is some of groff's
2180: * stranger behaviours. If we encountered a custom end-scope
2181: * tag and that tag also happens to be a "real" macro, then we
2182: * need to try interpreting it again as a real macro. If it's
2183: * not, then return ignore. Else continue.
2184: */
2185:
2186: if (r->last->end) {
1.130 kristaps 2187: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2188: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2189: break;
2190:
1.238 schwarze 2191: if (r->last->end[j] == '\0' &&
2192: (buf->buf[i] == '\0' ||
2193: buf->buf[i] == ' ' ||
2194: buf->buf[i] == '\t')) {
1.79 kristaps 2195: roffnode_pop(r);
2196: roffnode_cleanscope(r);
2197:
1.238 schwarze 2198: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2199: i++;
2200:
2201: pos = i;
1.238 schwarze 2202: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2203: TOKEN_NONE)
1.277 schwarze 2204: return ROFF_RERUN;
2205: return ROFF_IGN;
1.79 kristaps 2206: }
2207: }
2208:
2209: /*
2210: * If we have no custom end-query or lookup failed, then try
2211: * pulling it out of the hashtable.
2212: */
2213:
1.238 schwarze 2214: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2215:
1.238 schwarze 2216: if (t != ROFF_cblock) {
2217: if (tok != ROFF_ig)
2218: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2219: return ROFF_IGN;
1.106 kristaps 2220: }
1.79 kristaps 2221:
1.277 schwarze 2222: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2223: }
2224:
1.340 schwarze 2225: static int
1.80 kristaps 2226: roff_block_text(ROFF_ARGS)
1.78 kristaps 2227: {
2228:
1.238 schwarze 2229: if (tok != ROFF_ig)
2230: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2231:
1.277 schwarze 2232: return ROFF_IGN;
1.78 kristaps 2233: }
2234:
1.340 schwarze 2235: static int
1.82 kristaps 2236: roff_cond_sub(ROFF_ARGS)
2237: {
1.340 schwarze 2238: char *ep;
2239: int endloop, irc, rr;
1.294 schwarze 2240: enum roff_tok t;
1.82 kristaps 2241:
1.340 schwarze 2242: irc = ROFF_IGN;
1.82 kristaps 2243: rr = r->last->rule;
1.340 schwarze 2244: endloop = tok != ROFF_while ? ROFF_IGN :
2245: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2246: if (roffnode_cleanscope(r))
2247: irc |= endloop;
1.144 kristaps 2248:
1.196 schwarze 2249: /*
2250: * If `\}' occurs on a macro line without a preceding macro,
2251: * drop the line completely.
2252: */
2253:
1.238 schwarze 2254: ep = buf->buf + pos;
2255: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2256: rr = 0;
1.196 schwarze 2257:
1.343 schwarze 2258: /*
2259: * The closing delimiter `\}' rewinds the conditional scope
2260: * but is otherwise ignored when interpreting the line.
2261: */
1.144 kristaps 2262:
1.238 schwarze 2263: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2264: switch (ep[1]) {
2265: case '}':
2266: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2267: if (roff_ccond(r, ln, ep - buf->buf))
2268: irc |= endloop;
1.318 schwarze 2269: break;
2270: case '\0':
2271: ++ep;
2272: break;
2273: default:
2274: ep += 2;
2275: break;
1.197 schwarze 2276: }
1.177 schwarze 2277: }
1.318 schwarze 2278:
2279: /*
2280: * Fully handle known macros when they are structurally
2281: * required or when the conditional evaluated to true.
2282: */
2283:
2284: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2285: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2286: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2287: rr ? ROFF_CONT : ROFF_IGN;
2288: return irc;
1.82 kristaps 2289: }
2290:
1.340 schwarze 2291: static int
1.82 kristaps 2292: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2293: {
1.140 kristaps 2294: char *ep;
1.340 schwarze 2295: int endloop, irc, rr;
1.82 kristaps 2296:
1.340 schwarze 2297: irc = ROFF_IGN;
1.82 kristaps 2298: rr = r->last->rule;
1.340 schwarze 2299: endloop = tok != ROFF_while ? ROFF_IGN :
2300: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2301: if (roffnode_cleanscope(r))
2302: irc |= endloop;
1.82 kristaps 2303:
1.343 schwarze 2304: /*
2305: * If `\}' occurs on a text line with neither preceding
2306: * nor following characters, drop the line completely.
2307: */
2308:
1.238 schwarze 2309: ep = buf->buf + pos;
1.343 schwarze 2310: if (strcmp(ep, "\\}") == 0)
2311: rr = 0;
2312:
2313: /*
2314: * The closing delimiter `\}' rewinds the conditional scope
2315: * but is otherwise ignored when interpreting the line.
2316: */
2317:
1.238 schwarze 2318: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2319: switch (ep[1]) {
2320: case '}':
2321: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2322: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2323: irc |= endloop;
1.343 schwarze 2324: break;
2325: case '\0':
2326: ++ep;
2327: break;
2328: default:
2329: ep += 2;
2330: break;
1.197 schwarze 2331: }
1.78 kristaps 2332: }
1.340 schwarze 2333: if (rr)
2334: irc |= ROFF_CONT;
2335: return irc;
1.74 kristaps 2336: }
2337:
1.266 schwarze 2338: /* --- handling of numeric and conditional expressions -------------------- */
2339:
1.204 schwarze 2340: /*
2341: * Parse a single signed integer number. Stop at the first non-digit.
2342: * If there is at least one digit, return success and advance the
2343: * parse point, else return failure and let the parse point unchanged.
2344: * Ignore overflows, treat them just like the C language.
2345: */
1.184 schwarze 2346: static int
1.261 schwarze 2347: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2348: {
1.261 schwarze 2349: int myres, scaled, n, p;
1.206 schwarze 2350:
2351: if (NULL == res)
2352: res = &myres;
1.184 schwarze 2353:
2354: p = *pos;
2355: n = v[p] == '-';
1.261 schwarze 2356: if (n || v[p] == '+')
1.184 schwarze 2357: p++;
2358:
1.261 schwarze 2359: if (flags & ROFFNUM_WHITE)
2360: while (isspace((unsigned char)v[p]))
2361: p++;
2362:
1.184 schwarze 2363: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2364: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2365: if (p == *pos + n)
2366: return 0;
2367:
2368: if (n)
2369: *res = -*res;
2370:
1.254 schwarze 2371: /* Each number may be followed by one optional scaling unit. */
2372:
2373: switch (v[p]) {
2374: case 'f':
1.261 schwarze 2375: scaled = *res * 65536;
1.254 schwarze 2376: break;
2377: case 'i':
1.261 schwarze 2378: scaled = *res * 240;
1.254 schwarze 2379: break;
2380: case 'c':
1.261 schwarze 2381: scaled = *res * 240 / 2.54;
1.254 schwarze 2382: break;
2383: case 'v':
2384: case 'P':
1.261 schwarze 2385: scaled = *res * 40;
1.254 schwarze 2386: break;
2387: case 'm':
2388: case 'n':
1.261 schwarze 2389: scaled = *res * 24;
1.254 schwarze 2390: break;
2391: case 'p':
1.261 schwarze 2392: scaled = *res * 10 / 3;
1.254 schwarze 2393: break;
2394: case 'u':
1.261 schwarze 2395: scaled = *res;
1.254 schwarze 2396: break;
2397: case 'M':
1.261 schwarze 2398: scaled = *res * 6 / 25;
1.254 schwarze 2399: break;
2400: default:
1.261 schwarze 2401: scaled = *res;
1.254 schwarze 2402: p--;
2403: break;
2404: }
1.261 schwarze 2405: if (flags & ROFFNUM_SCALE)
2406: *res = scaled;
1.254 schwarze 2407:
2408: *pos = p + 1;
1.277 schwarze 2409: return 1;
1.184 schwarze 2410: }
2411:
1.198 schwarze 2412: /*
2413: * Evaluate a string comparison condition.
2414: * The first character is the delimiter.
2415: * Succeed if the string up to its second occurrence
2416: * matches the string up to its third occurence.
2417: * Advance the cursor after the third occurrence
2418: * or lacking that, to the end of the line.
2419: */
2420: static int
2421: roff_evalstrcond(const char *v, int *pos)
2422: {
2423: const char *s1, *s2, *s3;
2424: int match;
2425:
2426: match = 0;
2427: s1 = v + *pos; /* initial delimiter */
2428: s2 = s1 + 1; /* for scanning the first string */
2429: s3 = strchr(s2, *s1); /* for scanning the second string */
2430:
2431: if (NULL == s3) /* found no middle delimiter */
2432: goto out;
2433:
2434: while ('\0' != *++s3) {
2435: if (*s2 != *s3) { /* mismatch */
2436: s3 = strchr(s3, *s1);
2437: break;
2438: }
2439: if (*s3 == *s1) { /* found the final delimiter */
2440: match = 1;
2441: break;
2442: }
2443: s2++;
2444: }
2445:
2446: out:
2447: if (NULL == s3)
2448: s3 = strchr(s2, '\0');
1.242 schwarze 2449: else if (*s3 != '\0')
1.198 schwarze 2450: s3++;
2451: *pos = s3 - v;
1.277 schwarze 2452: return match;
1.198 schwarze 2453: }
2454:
1.204 schwarze 2455: /*
2456: * Evaluate an optionally negated single character, numerical,
2457: * or string condition.
2458: */
1.198 schwarze 2459: static int
1.271 schwarze 2460: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2461: {
1.336 schwarze 2462: const char *start, *end;
2463: char *cp, *name;
2464: size_t sz;
2465: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2466:
1.198 schwarze 2467: if ('!' == v[*pos]) {
2468: wanttrue = 0;
2469: (*pos)++;
2470: } else
2471: wanttrue = 1;
2472:
1.88 kristaps 2473: switch (v[*pos]) {
1.240 schwarze 2474: case '\0':
1.277 schwarze 2475: return 0;
1.207 schwarze 2476: case 'n':
2477: case 'o':
1.88 kristaps 2478: (*pos)++;
1.277 schwarze 2479: return wanttrue;
1.207 schwarze 2480: case 'e':
2481: case 't':
1.239 schwarze 2482: case 'v':
1.88 kristaps 2483: (*pos)++;
1.277 schwarze 2484: return !wanttrue;
1.336 schwarze 2485: case 'c':
2486: do {
2487: (*pos)++;
2488: } while (v[*pos] == ' ');
2489:
2490: /*
2491: * Quirk for groff compatibility:
2492: * The horizontal tab is neither available nor unavailable.
2493: */
2494:
2495: if (v[*pos] == '\t') {
2496: (*pos)++;
2497: return 0;
2498: }
2499:
2500: /* Printable ASCII characters are available. */
2501:
2502: if (v[*pos] != '\\') {
2503: (*pos)++;
2504: return wanttrue;
2505: }
2506:
2507: end = v + ++*pos;
2508: switch (mandoc_escape(&end, &start, &len)) {
2509: case ESCAPE_SPECIAL:
2510: istrue = mchars_spec2cp(start, len) != -1;
2511: break;
2512: case ESCAPE_UNICODE:
2513: istrue = 1;
2514: break;
2515: case ESCAPE_NUMBERED:
2516: istrue = mchars_num2char(start, len) != -1;
2517: break;
2518: default:
2519: istrue = !wanttrue;
2520: break;
2521: }
2522: *pos = end - v;
2523: return istrue == wanttrue;
1.310 schwarze 2524: case 'd':
1.271 schwarze 2525: case 'r':
1.310 schwarze 2526: cp = v + *pos + 1;
2527: while (*cp == ' ')
2528: cp++;
2529: name = cp;
2530: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2531: if (sz == 0)
2532: istrue = 0;
2533: else if (v[*pos] == 'r')
2534: istrue = roff_hasregn(r, name, sz);
2535: else {
2536: deftype = ROFFDEF_ANY;
2537: roff_getstrn(r, name, sz, &deftype);
2538: istrue = !!deftype;
2539: }
1.271 schwarze 2540: *pos = cp - v;
1.310 schwarze 2541: return istrue == wanttrue;
1.88 kristaps 2542: default:
2543: break;
2544: }
2545:
1.241 schwarze 2546: savepos = *pos;
1.261 schwarze 2547: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2548: return (number > 0) == wanttrue;
1.241 schwarze 2549: else if (*pos == savepos)
1.277 schwarze 2550: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2551: else
1.277 schwarze 2552: return 0;
1.88 kristaps 2553: }
2554:
1.340 schwarze 2555: static int
1.103 kristaps 2556: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2557: {
1.123 schwarze 2558:
1.277 schwarze 2559: return ROFF_IGN;
1.89 kristaps 2560: }
2561:
1.340 schwarze 2562: static int
1.251 schwarze 2563: roff_insec(ROFF_ARGS)
2564: {
2565:
1.350 schwarze 2566: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2567: return ROFF_IGN;
1.251 schwarze 2568: }
2569:
1.340 schwarze 2570: static int
1.251 schwarze 2571: roff_unsupp(ROFF_ARGS)
2572: {
2573:
1.350 schwarze 2574: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2575: return ROFF_IGN;
1.251 schwarze 2576: }
2577:
1.340 schwarze 2578: static int
1.82 kristaps 2579: roff_cond(ROFF_ARGS)
1.74 kristaps 2580: {
1.340 schwarze 2581: int irc;
1.173 schwarze 2582:
2583: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2584:
1.207 schwarze 2585: /*
1.134 kristaps 2586: * An `.el' has no conditional body: it will consume the value
2587: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2588: * defaults to DENY.
1.134 kristaps 2589: *
2590: * If we're not an `el', however, then evaluate the conditional.
2591: */
1.133 kristaps 2592:
1.238 schwarze 2593: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2594: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2595: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2596:
1.134 kristaps 2597: /*
2598: * An if-else will put the NEGATION of the current evaluated
2599: * conditional into the stack of rules.
2600: */
2601:
1.238 schwarze 2602: if (tok == ROFF_ie) {
1.223 schwarze 2603: if (r->rstackpos + 1 == r->rstacksz) {
2604: r->rstacksz += 16;
2605: r->rstack = mandoc_reallocarray(r->rstack,
2606: r->rstacksz, sizeof(int));
1.134 kristaps 2607: }
1.198 schwarze 2608: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2609: }
1.88 kristaps 2610:
2611: /* If the parent has false as its rule, then so do we. */
2612:
1.198 schwarze 2613: if (r->last->parent && !r->last->parent->rule)
2614: r->last->rule = 0;
1.88 kristaps 2615:
2616: /*
1.173 schwarze 2617: * Determine scope.
2618: * If there is nothing on the line after the conditional,
2619: * not even whitespace, use next-line scope.
1.340 schwarze 2620: * Except that .while does not support next-line scope.
1.88 kristaps 2621: */
1.74 kristaps 2622:
1.340 schwarze 2623: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2624: r->last->endspan = 2;
2625: goto out;
2626: }
2627:
1.238 schwarze 2628: while (buf->buf[pos] == ' ')
1.173 schwarze 2629: pos++;
2630:
2631: /* An opening brace requests multiline scope. */
1.75 kristaps 2632:
1.238 schwarze 2633: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2634: r->last->endspan = -1;
2635: pos += 2;
1.272 schwarze 2636: while (buf->buf[pos] == ' ')
2637: pos++;
1.173 schwarze 2638: goto out;
1.207 schwarze 2639: }
1.74 kristaps 2640:
1.77 kristaps 2641: /*
1.173 schwarze 2642: * Anything else following the conditional causes
2643: * single-line scope. Warn if the scope contains
2644: * nothing but trailing whitespace.
1.77 kristaps 2645: */
2646:
1.238 schwarze 2647: if (buf->buf[pos] == '\0')
1.350 schwarze 2648: mandoc_msg(MANDOCERR_COND_EMPTY,
2649: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2650:
1.173 schwarze 2651: r->last->endspan = 1;
1.74 kristaps 2652:
1.173 schwarze 2653: out:
1.75 kristaps 2654: *offs = pos;
1.340 schwarze 2655: irc = ROFF_RERUN;
2656: if (tok == ROFF_while)
2657: irc |= ROFF_WHILE;
2658: return irc;
1.83 schwarze 2659: }
2660:
1.340 schwarze 2661: static int
1.92 schwarze 2662: roff_ds(ROFF_ARGS)
2663: {
1.212 schwarze 2664: char *string;
2665: const char *name;
2666: size_t namesz;
1.96 kristaps 2667:
1.251 schwarze 2668: /* Ignore groff compatibility mode for now. */
2669:
2670: if (tok == ROFF_ds1)
2671: tok = ROFF_ds;
2672: else if (tok == ROFF_as1)
2673: tok = ROFF_as;
2674:
1.96 kristaps 2675: /*
1.212 schwarze 2676: * The first word is the name of the string.
2677: * If it is empty or terminated by an escape sequence,
2678: * abort the `ds' request without defining anything.
1.96 kristaps 2679: */
1.92 schwarze 2680:
1.238 schwarze 2681: name = string = buf->buf + pos;
2682: if (*name == '\0')
1.277 schwarze 2683: return ROFF_IGN;
1.92 schwarze 2684:
1.212 schwarze 2685: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2686: if (name[namesz] == '\\')
1.277 schwarze 2687: return ROFF_IGN;
1.212 schwarze 2688:
2689: /* Read past the initial double-quote, if any. */
1.238 schwarze 2690: if (*string == '"')
1.92 schwarze 2691: string++;
2692:
1.96 kristaps 2693: /* The rest is the value. */
1.212 schwarze 2694: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2695: ROFF_as == tok);
1.311 schwarze 2696: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2697: return ROFF_IGN;
1.92 schwarze 2698: }
2699:
1.204 schwarze 2700: /*
2701: * Parse a single operator, one or two characters long.
2702: * If the operator is recognized, return success and advance the
2703: * parse point, else return failure and let the parse point unchanged.
2704: */
2705: static int
2706: roff_getop(const char *v, int *pos, char *res)
2707: {
2708:
2709: *res = v[*pos];
2710:
2711: switch (*res) {
1.207 schwarze 2712: case '+':
2713: case '-':
2714: case '*':
2715: case '/':
2716: case '%':
2717: case '&':
2718: case ':':
1.204 schwarze 2719: break;
2720: case '<':
2721: switch (v[*pos + 1]) {
1.207 schwarze 2722: case '=':
1.204 schwarze 2723: *res = 'l';
2724: (*pos)++;
2725: break;
1.207 schwarze 2726: case '>':
1.204 schwarze 2727: *res = '!';
2728: (*pos)++;
2729: break;
1.207 schwarze 2730: case '?':
1.204 schwarze 2731: *res = 'i';
2732: (*pos)++;
2733: break;
2734: default:
2735: break;
2736: }
2737: break;
2738: case '>':
2739: switch (v[*pos + 1]) {
1.207 schwarze 2740: case '=':
1.204 schwarze 2741: *res = 'g';
2742: (*pos)++;
2743: break;
1.207 schwarze 2744: case '?':
1.204 schwarze 2745: *res = 'a';
2746: (*pos)++;
2747: break;
2748: default:
2749: break;
2750: }
2751: break;
2752: case '=':
2753: if ('=' == v[*pos + 1])
2754: (*pos)++;
2755: break;
2756: default:
1.277 schwarze 2757: return 0;
1.204 schwarze 2758: }
2759: (*pos)++;
2760:
1.277 schwarze 2761: return *res;
1.204 schwarze 2762: }
2763:
2764: /*
2765: * Evaluate either a parenthesized numeric expression
2766: * or a single signed integer number.
2767: */
2768: static int
1.235 schwarze 2769: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2770: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2771: {
2772:
2773: if ('(' != v[*pos])
1.277 schwarze 2774: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2775:
2776: (*pos)++;
1.261 schwarze 2777: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2778: return 0;
1.204 schwarze 2779:
1.206 schwarze 2780: /*
2781: * Omission of the closing parenthesis
2782: * is an error in validation mode,
2783: * but ignored in evaluation mode.
2784: */
2785:
1.204 schwarze 2786: if (')' == v[*pos])
2787: (*pos)++;
1.206 schwarze 2788: else if (NULL == res)
1.277 schwarze 2789: return 0;
1.204 schwarze 2790:
1.277 schwarze 2791: return 1;
1.204 schwarze 2792: }
2793:
2794: /*
2795: * Evaluate a complete numeric expression.
2796: * Proceed left to right, there is no concept of precedence.
2797: */
2798: static int
1.235 schwarze 2799: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2800: int *pos, int *res, int flags)
1.204 schwarze 2801: {
2802: int mypos, operand2;
2803: char operator;
2804:
2805: if (NULL == pos) {
2806: mypos = 0;
2807: pos = &mypos;
2808: }
2809:
1.261 schwarze 2810: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2811: while (isspace((unsigned char)v[*pos]))
2812: (*pos)++;
2813:
1.261 schwarze 2814: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2815: return 0;
1.204 schwarze 2816:
2817: while (1) {
1.261 schwarze 2818: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2819: while (isspace((unsigned char)v[*pos]))
2820: (*pos)++;
2821:
2822: if ( ! roff_getop(v, pos, &operator))
2823: break;
2824:
1.261 schwarze 2825: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2826: while (isspace((unsigned char)v[*pos]))
2827: (*pos)++;
2828:
1.261 schwarze 2829: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2830: return 0;
1.204 schwarze 2831:
1.261 schwarze 2832: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2833: while (isspace((unsigned char)v[*pos]))
2834: (*pos)++;
1.206 schwarze 2835:
2836: if (NULL == res)
2837: continue;
1.204 schwarze 2838:
2839: switch (operator) {
1.207 schwarze 2840: case '+':
1.204 schwarze 2841: *res += operand2;
2842: break;
1.207 schwarze 2843: case '-':
1.204 schwarze 2844: *res -= operand2;
2845: break;
1.207 schwarze 2846: case '*':
1.204 schwarze 2847: *res *= operand2;
2848: break;
1.207 schwarze 2849: case '/':
1.244 schwarze 2850: if (operand2 == 0) {
1.235 schwarze 2851: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2852: ln, *pos, "%s", v);
1.234 kristaps 2853: *res = 0;
2854: break;
2855: }
1.204 schwarze 2856: *res /= operand2;
2857: break;
1.207 schwarze 2858: case '%':
1.244 schwarze 2859: if (operand2 == 0) {
2860: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2861: ln, *pos, "%s", v);
1.244 schwarze 2862: *res = 0;
2863: break;
2864: }
1.204 schwarze 2865: *res %= operand2;
2866: break;
1.207 schwarze 2867: case '<':
1.204 schwarze 2868: *res = *res < operand2;
2869: break;
1.207 schwarze 2870: case '>':
1.204 schwarze 2871: *res = *res > operand2;
2872: break;
1.207 schwarze 2873: case 'l':
1.204 schwarze 2874: *res = *res <= operand2;
2875: break;
1.207 schwarze 2876: case 'g':
1.204 schwarze 2877: *res = *res >= operand2;
2878: break;
1.207 schwarze 2879: case '=':
1.204 schwarze 2880: *res = *res == operand2;
2881: break;
1.207 schwarze 2882: case '!':
1.204 schwarze 2883: *res = *res != operand2;
2884: break;
1.207 schwarze 2885: case '&':
1.204 schwarze 2886: *res = *res && operand2;
2887: break;
1.207 schwarze 2888: case ':':
1.204 schwarze 2889: *res = *res || operand2;
2890: break;
1.207 schwarze 2891: case 'i':
1.204 schwarze 2892: if (operand2 < *res)
2893: *res = operand2;
2894: break;
1.207 schwarze 2895: case 'a':
1.204 schwarze 2896: if (operand2 > *res)
2897: *res = operand2;
2898: break;
2899: default:
2900: abort();
2901: }
2902: }
1.277 schwarze 2903: return 1;
1.204 schwarze 2904: }
2905:
1.266 schwarze 2906: /* --- register management ------------------------------------------------ */
2907:
1.180 schwarze 2908: void
1.187 schwarze 2909: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2910: {
1.327 schwarze 2911: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2912: }
2913:
2914: static void
2915: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2916: int val, char sign, int step)
1.326 schwarze 2917: {
1.180 schwarze 2918: struct roffreg *reg;
2919:
2920: /* Search for an existing register with the same name. */
2921: reg = r->regtab;
2922:
1.326 schwarze 2923: while (reg != NULL && (reg->key.sz != len ||
2924: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2925: reg = reg->next;
1.147 kristaps 2926:
1.180 schwarze 2927: if (NULL == reg) {
2928: /* Create a new register. */
2929: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2930: reg->key.p = mandoc_strndup(name, len);
2931: reg->key.sz = len;
1.187 schwarze 2932: reg->val = 0;
1.327 schwarze 2933: reg->step = 0;
1.180 schwarze 2934: reg->next = r->regtab;
2935: r->regtab = reg;
2936: }
2937:
1.187 schwarze 2938: if ('+' == sign)
2939: reg->val += val;
2940: else if ('-' == sign)
2941: reg->val -= val;
2942: else
2943: reg->val = val;
1.327 schwarze 2944: if (step != INT_MIN)
2945: reg->step = step;
1.147 kristaps 2946: }
2947:
1.192 schwarze 2948: /*
2949: * Handle some predefined read-only number registers.
2950: * For now, return -1 if the requested register is not predefined;
2951: * in case a predefined read-only register having the value -1
2952: * were to turn up, another special value would have to be chosen.
2953: */
2954: static int
1.273 schwarze 2955: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2956: {
2957:
2958: switch (*name) {
1.273 schwarze 2959: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2960: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2961: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2962: return 0;
1.207 schwarze 2963: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2964: return 1;
1.207 schwarze 2965: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2966: return 24;
1.207 schwarze 2967: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2968: return 0;
1.207 schwarze 2969: case 'T': /* Some output device is always defined. */
1.277 schwarze 2970: return 1;
1.207 schwarze 2971: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2972: return 40;
1.192 schwarze 2973: default:
1.277 schwarze 2974: return -1;
1.192 schwarze 2975: }
2976: }
2977:
1.181 schwarze 2978: int
1.326 schwarze 2979: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2980: {
1.327 schwarze 2981: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2982: }
2983:
2984: static int
1.327 schwarze 2985: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2986: {
2987: struct roffreg *reg;
1.192 schwarze 2988: int val;
2989:
2990: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2991: val = roff_getregro(r, name + 1);
1.192 schwarze 2992: if (-1 != val)
1.277 schwarze 2993: return val;
1.192 schwarze 2994: }
1.181 schwarze 2995:
1.327 schwarze 2996: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2997: if (len == reg->key.sz &&
1.327 schwarze 2998: 0 == strncmp(name, reg->key.p, len)) {
2999: switch (sign) {
3000: case '+':
3001: reg->val += reg->step;
3002: break;
3003: case '-':
3004: reg->val -= reg->step;
3005: break;
3006: default:
3007: break;
3008: }
1.277 schwarze 3009: return reg->val;
1.327 schwarze 3010: }
3011: }
1.271 schwarze 3012:
1.327 schwarze 3013: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3014: return 0;
1.271 schwarze 3015: }
3016:
3017: static int
3018: roff_hasregn(const struct roff *r, const char *name, size_t len)
3019: {
3020: struct roffreg *reg;
3021: int val;
3022:
3023: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3024: val = roff_getregro(r, name + 1);
1.271 schwarze 3025: if (-1 != val)
1.277 schwarze 3026: return 1;
1.271 schwarze 3027: }
3028:
3029: for (reg = r->regtab; reg; reg = reg->next)
3030: if (len == reg->key.sz &&
3031: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3032: return 1;
1.147 kristaps 3033:
1.277 schwarze 3034: return 0;
1.147 kristaps 3035: }
3036:
1.180 schwarze 3037: static void
3038: roff_freereg(struct roffreg *reg)
1.147 kristaps 3039: {
1.180 schwarze 3040: struct roffreg *old_reg;
1.147 kristaps 3041:
1.180 schwarze 3042: while (NULL != reg) {
3043: free(reg->key.p);
3044: old_reg = reg;
3045: reg = reg->next;
3046: free(old_reg);
3047: }
1.147 kristaps 3048: }
1.92 schwarze 3049:
1.340 schwarze 3050: static int
1.89 kristaps 3051: roff_nr(ROFF_ARGS)
1.83 schwarze 3052: {
1.327 schwarze 3053: char *key, *val, *step;
1.212 schwarze 3054: size_t keysz;
1.327 schwarze 3055: int iv, is, len;
1.187 schwarze 3056: char sign;
1.89 kristaps 3057:
1.238 schwarze 3058: key = val = buf->buf + pos;
3059: if (*key == '\0')
1.277 schwarze 3060: return ROFF_IGN;
1.212 schwarze 3061:
3062: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 3063: if (key[keysz] == '\\')
1.277 schwarze 3064: return ROFF_IGN;
1.89 kristaps 3065:
1.187 schwarze 3066: sign = *val;
1.238 schwarze 3067: if (sign == '+' || sign == '-')
1.187 schwarze 3068: val++;
3069:
1.327 schwarze 3070: len = 0;
3071: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3072: return ROFF_IGN;
3073:
3074: step = val + len;
3075: while (isspace((unsigned char)*step))
3076: step++;
3077: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3078: is = INT_MIN;
1.109 kristaps 3079:
1.327 schwarze 3080: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3081: return ROFF_IGN;
1.203 schwarze 3082: }
3083:
1.340 schwarze 3084: static int
1.203 schwarze 3085: roff_rr(ROFF_ARGS)
3086: {
3087: struct roffreg *reg, **prev;
1.212 schwarze 3088: char *name, *cp;
3089: size_t namesz;
1.203 schwarze 3090:
1.238 schwarze 3091: name = cp = buf->buf + pos;
3092: if (*name == '\0')
1.277 schwarze 3093: return ROFF_IGN;
1.212 schwarze 3094: namesz = roff_getname(r, &cp, ln, pos);
3095: name[namesz] = '\0';
1.203 schwarze 3096:
3097: prev = &r->regtab;
3098: while (1) {
3099: reg = *prev;
1.238 schwarze 3100: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3101: break;
3102: prev = ®->next;
3103: }
1.238 schwarze 3104: if (reg != NULL) {
1.203 schwarze 3105: *prev = reg->next;
3106: free(reg->key.p);
3107: free(reg);
3108: }
1.277 schwarze 3109: return ROFF_IGN;
1.122 schwarze 3110: }
3111:
1.266 schwarze 3112: /* --- handler functions for roff requests -------------------------------- */
3113:
1.340 schwarze 3114: static int
1.122 schwarze 3115: roff_rm(ROFF_ARGS)
3116: {
3117: const char *name;
3118: char *cp;
1.212 schwarze 3119: size_t namesz;
1.122 schwarze 3120:
1.238 schwarze 3121: cp = buf->buf + pos;
3122: while (*cp != '\0') {
1.212 schwarze 3123: name = cp;
1.238 schwarze 3124: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3125: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3126: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 3127: if (name[namesz] == '\\')
1.212 schwarze 3128: break;
1.122 schwarze 3129: }
1.277 schwarze 3130: return ROFF_IGN;
1.178 schwarze 3131: }
3132:
1.340 schwarze 3133: static int
1.178 schwarze 3134: roff_it(ROFF_ARGS)
3135: {
3136: int iv;
3137:
3138: /* Parse the number of lines. */
1.261 schwarze 3139:
3140: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3141: mandoc_msg(MANDOCERR_IT_NONUM,
3142: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3143: return ROFF_IGN;
1.178 schwarze 3144: }
3145:
1.262 schwarze 3146: while (isspace((unsigned char)buf->buf[pos]))
3147: pos++;
3148:
3149: /*
3150: * Arm the input line trap.
3151: * Special-casing "an-trap" is an ugly workaround to cope
3152: * with DocBook stupidly fiddling with man(7) internals.
3153: */
1.261 schwarze 3154:
1.178 schwarze 3155: roffit_lines = iv;
1.262 schwarze 3156: roffit_macro = mandoc_strdup(iv != 1 ||
3157: strcmp(buf->buf + pos, "an-trap") ?
3158: buf->buf + pos : "br");
1.277 schwarze 3159: return ROFF_IGN;
1.175 schwarze 3160: }
3161:
1.340 schwarze 3162: static int
1.175 schwarze 3163: roff_Dd(ROFF_ARGS)
3164: {
1.315 schwarze 3165: int mask;
3166: enum roff_tok t, te;
1.227 schwarze 3167:
1.315 schwarze 3168: switch (tok) {
3169: case ROFF_Dd:
3170: tok = MDOC_Dd;
3171: te = MDOC_MAX;
3172: if (r->format == 0)
3173: r->format = MPARSE_MDOC;
3174: mask = MPARSE_MDOC | MPARSE_QUICK;
3175: break;
3176: case ROFF_TH:
3177: tok = MAN_TH;
3178: te = MAN_MAX;
3179: if (r->format == 0)
3180: r->format = MPARSE_MAN;
3181: mask = MPARSE_QUICK;
3182: break;
3183: default:
3184: abort();
3185: }
3186: if ((r->options & mask) == 0)
3187: for (t = tok; t < te; t++)
3188: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3189: return ROFF_CONT;
1.109 kristaps 3190: }
3191:
1.340 schwarze 3192: static int
1.109 kristaps 3193: roff_TE(ROFF_ARGS)
3194: {
1.361 schwarze 3195: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3196: if (r->tbl == NULL) {
1.350 schwarze 3197: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3198: return ROFF_IGN;
3199: }
1.346 schwarze 3200: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3201: r->tbl = NULL;
1.258 schwarze 3202: free(buf->buf);
3203: buf->buf = mandoc_strdup(".sp");
3204: buf->sz = 4;
1.329 schwarze 3205: *offs = 0;
1.277 schwarze 3206: return ROFF_REPARSE;
1.258 schwarze 3207: }
1.321 schwarze 3208: r->tbl = NULL;
1.277 schwarze 3209: return ROFF_IGN;
1.112 kristaps 3210: }
3211:
1.340 schwarze 3212: static int
1.112 kristaps 3213: roff_T_(ROFF_ARGS)
3214: {
3215:
3216: if (NULL == r->tbl)
1.350 schwarze 3217: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3218: else
1.296 schwarze 3219: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3220:
1.277 schwarze 3221: return ROFF_IGN;
1.109 kristaps 3222: }
3223:
1.230 schwarze 3224: /*
3225: * Handle in-line equation delimiters.
3226: */
1.340 schwarze 3227: static int
1.238 schwarze 3228: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3229: {
1.233 schwarze 3230: char *cp1, *cp2;
3231: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3232:
1.230 schwarze 3233: /*
3234: * Outside equations, look for an opening delimiter.
3235: * If we are inside an equation, we already know it is
3236: * in-line, or this function wouldn't have been called;
3237: * so look for a closing delimiter.
3238: */
3239:
1.238 schwarze 3240: cp1 = buf->buf + pos;
1.230 schwarze 3241: cp2 = strchr(cp1, r->eqn == NULL ?
3242: r->last_eqn->odelim : r->last_eqn->cdelim);
3243: if (cp2 == NULL)
1.277 schwarze 3244: return ROFF_CONT;
1.230 schwarze 3245:
1.233 schwarze 3246: *cp2++ = '\0';
3247: bef_pr = bef_nl = aft_nl = aft_pr = "";
3248:
3249: /* Handle preceding text, protecting whitespace. */
3250:
1.238 schwarze 3251: if (*buf->buf != '\0') {
1.233 schwarze 3252: if (r->eqn == NULL)
3253: bef_pr = "\\&";
3254: bef_nl = "\n";
3255: }
3256:
3257: /*
3258: * Prepare replacing the delimiter with an equation macro
3259: * and drop leading white space from the equation.
3260: */
1.230 schwarze 3261:
1.233 schwarze 3262: if (r->eqn == NULL) {
3263: while (*cp2 == ' ')
3264: cp2++;
3265: mac = ".EQ";
3266: } else
3267: mac = ".EN";
3268:
3269: /* Handle following text, protecting whitespace. */
3270:
3271: if (*cp2 != '\0') {
3272: aft_nl = "\n";
3273: if (r->eqn != NULL)
3274: aft_pr = "\\&";
3275: }
3276:
3277: /* Do the actual replacement. */
3278:
1.238 schwarze 3279: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3280: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3281: free(buf->buf);
3282: buf->buf = cp1;
1.230 schwarze 3283:
3284: /* Toggle the in-line state of the eqn subsystem. */
3285:
3286: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3287: return ROFF_REPARSE;
1.151 kristaps 3288: }
3289:
1.340 schwarze 3290: static int
1.235 schwarze 3291: roff_EQ(ROFF_ARGS)
1.125 kristaps 3292: {
1.319 schwarze 3293: struct roff_node *n;
3294:
1.356 schwarze 3295: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3296: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3297: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3298: if (ln > r->man->last->line)
3299: n->flags |= NODE_LINE;
1.348 schwarze 3300: n->eqn = eqn_box_new();
1.319 schwarze 3301: roff_node_append(r->man, n);
3302: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3303:
1.238 schwarze 3304: assert(r->eqn == NULL);
1.319 schwarze 3305: if (r->last_eqn == NULL)
1.351 schwarze 3306: r->last_eqn = eqn_alloc();
1.319 schwarze 3307: else
3308: eqn_reset(r->last_eqn);
3309: r->eqn = r->last_eqn;
3310: r->eqn->node = n;
1.151 kristaps 3311:
1.238 schwarze 3312: if (buf->buf[pos] != '\0')
1.350 schwarze 3313: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3314: ".EQ %s", buf->buf + pos);
1.151 kristaps 3315:
1.277 schwarze 3316: return ROFF_IGN;
1.125 kristaps 3317: }
3318:
1.340 schwarze 3319: static int
1.125 kristaps 3320: roff_EN(ROFF_ARGS)
3321: {
1.319 schwarze 3322: if (r->eqn != NULL) {
3323: eqn_parse(r->eqn);
3324: r->eqn = NULL;
3325: } else
1.350 schwarze 3326: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3327: if (buf->buf[pos] != '\0')
1.350 schwarze 3328: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3329: "EN %s", buf->buf + pos);
1.277 schwarze 3330: return ROFF_IGN;
1.125 kristaps 3331: }
3332:
1.340 schwarze 3333: static int
1.109 kristaps 3334: roff_TS(ROFF_ARGS)
3335: {
1.321 schwarze 3336: if (r->tbl != NULL) {
1.350 schwarze 3337: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3338: tbl_end(r->tbl, 0);
1.115 kristaps 3339: }
1.361 schwarze 3340: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3341: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3342: if (r->last_tbl == NULL)
1.321 schwarze 3343: r->first_tbl = r->tbl;
3344: r->last_tbl = r->tbl;
1.297 schwarze 3345: return ROFF_IGN;
3346: }
3347:
1.340 schwarze 3348: static int
1.358 schwarze 3349: roff_noarg(ROFF_ARGS)
3350: {
3351: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3352: man_breakscope(r->man, tok);
3353: if (tok == ROFF_brp)
3354: tok = ROFF_br;
3355: roff_elem_alloc(r->man, ln, ppos, tok);
3356: if (buf->buf[pos] != '\0')
3357: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3358: "%s %s", roff_name[tok], buf->buf + pos);
3359: if (tok == ROFF_nf)
3360: r->man->flags |= ROFF_NOFILL;
3361: else if (tok == ROFF_fi)
3362: r->man->flags &= ~ROFF_NOFILL;
3363: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3364: r->man->next = ROFF_NEXT_SIBLING;
3365: return ROFF_IGN;
3366: }
3367:
3368: static int
1.297 schwarze 3369: roff_onearg(ROFF_ARGS)
3370: {
3371: struct roff_node *n;
3372: char *cp;
1.305 schwarze 3373: int npos;
1.297 schwarze 3374:
1.302 schwarze 3375: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3376: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3377: tok == ROFF_ti))
1.302 schwarze 3378: man_breakscope(r->man, tok);
3379:
1.309 schwarze 3380: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3381: r->man->last = roffce_node;
3382: r->man->next = ROFF_NEXT_SIBLING;
3383: }
3384:
1.297 schwarze 3385: roff_elem_alloc(r->man, ln, ppos, tok);
3386: n = r->man->last;
3387:
3388: cp = buf->buf + pos;
3389: if (*cp != '\0') {
3390: while (*cp != '\0' && *cp != ' ')
3391: cp++;
3392: while (*cp == ' ')
3393: *cp++ = '\0';
3394: if (*cp != '\0')
1.350 schwarze 3395: mandoc_msg(MANDOCERR_ARG_EXCESS,
3396: ln, (int)(cp - buf->buf),
1.297 schwarze 3397: "%s ... %s", roff_name[tok], cp);
3398: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3399: }
3400:
1.309 schwarze 3401: if (tok == ROFF_ce || tok == ROFF_rj) {
3402: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3403: roff_word_alloc(r->man, ln, pos, "1");
3404: r->man->last->flags |= NODE_NOSRC;
3405: }
3406: npos = 0;
3407: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3408: &roffce_lines, 0) == 0) {
1.350 schwarze 3409: mandoc_msg(MANDOCERR_CE_NONUM,
3410: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3411: roffce_lines = 1;
3412: }
3413: if (roffce_lines < 1) {
3414: r->man->last = r->man->last->parent;
3415: roffce_node = NULL;
3416: roffce_lines = 0;
3417: } else
3418: roffce_node = r->man->last->parent;
3419: } else {
3420: n->flags |= NODE_VALID | NODE_ENDED;
3421: r->man->last = n;
3422: }
3423: n->flags |= NODE_LINE;
1.300 schwarze 3424: r->man->next = ROFF_NEXT_SIBLING;
3425: return ROFF_IGN;
3426: }
3427:
1.340 schwarze 3428: static int
1.300 schwarze 3429: roff_manyarg(ROFF_ARGS)
3430: {
3431: struct roff_node *n;
3432: char *sp, *ep;
3433:
3434: roff_elem_alloc(r->man, ln, ppos, tok);
3435: n = r->man->last;
3436:
3437: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3438: while (*ep != '\0' && *ep != ' ')
3439: ep++;
3440: while (*ep == ' ')
3441: *ep++ = '\0';
3442: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3443: }
3444:
3445: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3446: r->man->last = n;
3447: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3448: return ROFF_IGN;
1.251 schwarze 3449: }
3450:
1.340 schwarze 3451: static int
1.311 schwarze 3452: roff_als(ROFF_ARGS)
3453: {
3454: char *oldn, *newn, *end, *value;
3455: size_t oldsz, newsz, valsz;
3456:
3457: newn = oldn = buf->buf + pos;
3458: if (*newn == '\0')
3459: return ROFF_IGN;
3460:
3461: newsz = roff_getname(r, &oldn, ln, pos);
3462: if (newn[newsz] == '\\' || *oldn == '\0')
3463: return ROFF_IGN;
3464:
3465: end = oldn;
3466: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3467: if (oldsz == 0)
3468: return ROFF_IGN;
3469:
1.338 schwarze 3470: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3471: (int)oldsz, oldn);
1.311 schwarze 3472: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3473: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3474: free(value);
1.296 schwarze 3475: return ROFF_IGN;
1.92 schwarze 3476: }
3477:
1.340 schwarze 3478: static int
1.174 kristaps 3479: roff_cc(ROFF_ARGS)
3480: {
3481: const char *p;
3482:
1.238 schwarze 3483: p = buf->buf + pos;
1.174 kristaps 3484:
1.238 schwarze 3485: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3486: r->control = '\0';
1.174 kristaps 3487:
1.238 schwarze 3488: if (*p != '\0')
1.350 schwarze 3489: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3490: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3491:
1.341 schwarze 3492: return ROFF_IGN;
3493: }
3494:
3495: static int
3496: roff_char(ROFF_ARGS)
3497: {
3498: const char *p, *kp, *vp;
3499: size_t ksz, vsz;
3500: int font;
3501:
3502: /* Parse the character to be replaced. */
3503:
3504: kp = buf->buf + pos;
3505: p = kp + 1;
3506: if (*kp == '\0' || (*kp == '\\' &&
3507: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3508: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3509: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3510: return ROFF_IGN;
3511: }
3512: ksz = p - kp;
3513: while (*p == ' ')
3514: p++;
3515:
3516: /*
3517: * If the replacement string contains a font escape sequence,
3518: * we have to restore the font at the end.
3519: */
3520:
3521: vp = p;
3522: vsz = strlen(p);
3523: font = 0;
3524: while (*p != '\0') {
3525: if (*p++ != '\\')
3526: continue;
3527: switch (mandoc_escape(&p, NULL, NULL)) {
3528: case ESCAPE_FONT:
3529: case ESCAPE_FONTROMAN:
3530: case ESCAPE_FONTITALIC:
3531: case ESCAPE_FONTBOLD:
3532: case ESCAPE_FONTBI:
1.342 schwarze 3533: case ESCAPE_FONTCW:
1.341 schwarze 3534: case ESCAPE_FONTPREV:
3535: font++;
3536: break;
3537: default:
3538: break;
3539: }
3540: }
3541: if (font > 1)
1.350 schwarze 3542: mandoc_msg(MANDOCERR_CHAR_FONT,
3543: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3544:
3545: /*
3546: * Approximate the effect of .char using the .tr tables.
3547: * XXX In groff, .char and .tr interact differently.
3548: */
3549:
3550: if (ksz == 1) {
3551: if (r->xtab == NULL)
3552: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3553: assert((unsigned int)*kp < 128);
3554: free(r->xtab[(int)*kp].p);
3555: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3556: "%s%s", vp, font ? "\fP" : "");
3557: } else {
3558: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3559: if (font)
3560: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3561: }
1.277 schwarze 3562: return ROFF_IGN;
1.174 kristaps 3563: }
3564:
1.340 schwarze 3565: static int
1.303 schwarze 3566: roff_ec(ROFF_ARGS)
3567: {
3568: const char *p;
3569:
3570: p = buf->buf + pos;
3571: if (*p == '\0')
3572: r->escape = '\\';
3573: else {
3574: r->escape = *p;
3575: if (*++p != '\0')
1.350 schwarze 3576: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3577: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3578: }
3579: return ROFF_IGN;
3580: }
3581:
1.340 schwarze 3582: static int
1.303 schwarze 3583: roff_eo(ROFF_ARGS)
3584: {
3585: r->escape = '\0';
3586: if (buf->buf[pos] != '\0')
1.350 schwarze 3587: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3588: ln, pos, "eo %s", buf->buf + pos);
3589: return ROFF_IGN;
1.330 schwarze 3590: }
3591:
1.340 schwarze 3592: static int
1.330 schwarze 3593: roff_nop(ROFF_ARGS)
3594: {
3595: while (buf->buf[pos] == ' ')
3596: pos++;
3597: *offs = pos;
3598: return ROFF_RERUN;
1.303 schwarze 3599: }
3600:
1.340 schwarze 3601: static int
1.164 kristaps 3602: roff_tr(ROFF_ARGS)
3603: {
3604: const char *p, *first, *second;
3605: size_t fsz, ssz;
3606: enum mandoc_esc esc;
3607:
1.238 schwarze 3608: p = buf->buf + pos;
1.164 kristaps 3609:
1.238 schwarze 3610: if (*p == '\0') {
1.350 schwarze 3611: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3612: return ROFF_IGN;
1.164 kristaps 3613: }
3614:
1.238 schwarze 3615: while (*p != '\0') {
1.164 kristaps 3616: fsz = ssz = 1;
3617:
3618: first = p++;
1.238 schwarze 3619: if (*first == '\\') {
1.164 kristaps 3620: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3621: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3622: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3623: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3624: return ROFF_IGN;
1.164 kristaps 3625: }
3626: fsz = (size_t)(p - first);
3627: }
3628:
3629: second = p++;
1.238 schwarze 3630: if (*second == '\\') {
1.164 kristaps 3631: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3632: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3633: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3634: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3635: return ROFF_IGN;
1.164 kristaps 3636: }
3637: ssz = (size_t)(p - second);
1.238 schwarze 3638: } else if (*second == '\0') {
1.350 schwarze 3639: mandoc_msg(MANDOCERR_TR_ODD, ln,
3640: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3641: second = " ";
1.165 kristaps 3642: p--;
1.164 kristaps 3643: }
3644:
1.167 kristaps 3645: if (fsz > 1) {
1.207 schwarze 3646: roff_setstrn(&r->xmbtab, first, fsz,
3647: second, ssz, 0);
1.167 kristaps 3648: continue;
3649: }
3650:
1.238 schwarze 3651: if (r->xtab == NULL)
1.207 schwarze 3652: r->xtab = mandoc_calloc(128,
3653: sizeof(struct roffstr));
1.167 kristaps 3654:
3655: free(r->xtab[(int)*first].p);
3656: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3657: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3658: }
3659:
1.277 schwarze 3660: return ROFF_IGN;
1.164 kristaps 3661: }
3662:
1.339 schwarze 3663: /*
3664: * Implementation of the .return request.
3665: * There is no need to call roff_userret() from here.
3666: * The read module will call that after rewinding the reader stack
3667: * to the place from where the current macro was called.
3668: */
1.340 schwarze 3669: static int
1.339 schwarze 3670: roff_return(ROFF_ARGS)
3671: {
3672: if (r->mstackpos >= 0)
1.340 schwarze 3673: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3674:
1.350 schwarze 3675: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3676: return ROFF_IGN;
3677: }
3678:
1.340 schwarze 3679: static int
1.306 schwarze 3680: roff_rn(ROFF_ARGS)
3681: {
3682: const char *value;
3683: char *oldn, *newn, *end;
3684: size_t oldsz, newsz;
1.315 schwarze 3685: int deftype;
1.306 schwarze 3686:
3687: oldn = newn = buf->buf + pos;
3688: if (*oldn == '\0')
3689: return ROFF_IGN;
3690:
3691: oldsz = roff_getname(r, &newn, ln, pos);
3692: if (oldn[oldsz] == '\\' || *newn == '\0')
3693: return ROFF_IGN;
3694:
3695: end = newn;
3696: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3697: if (newsz == 0)
3698: return ROFF_IGN;
3699:
1.315 schwarze 3700: deftype = ROFFDEF_ANY;
3701: value = roff_getstrn(r, oldn, oldsz, &deftype);
3702: switch (deftype) {
3703: case ROFFDEF_USER:
1.306 schwarze 3704: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3705: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3706: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3707: break;
3708: case ROFFDEF_PRE:
3709: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3710: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3711: break;
3712: case ROFFDEF_REN:
1.306 schwarze 3713: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3714: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3715: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3716: break;
3717: case ROFFDEF_STD:
1.306 schwarze 3718: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3719: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3720: break;
3721: default:
3722: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3723: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3724: break;
3725: }
1.306 schwarze 3726: return ROFF_IGN;
3727: }
3728:
1.340 schwarze 3729: static int
1.339 schwarze 3730: roff_shift(ROFF_ARGS)
3731: {
3732: struct mctx *ctx;
3733: int levels, i;
3734:
3735: levels = 1;
3736: if (buf->buf[pos] != '\0' &&
3737: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3738: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3739: ln, pos, "shift %s", buf->buf + pos);
3740: levels = 1;
3741: }
3742: if (r->mstackpos < 0) {
1.350 schwarze 3743: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3744: return ROFF_IGN;
3745: }
3746: ctx = r->mstack + r->mstackpos;
3747: if (levels > ctx->argc) {
1.350 schwarze 3748: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3749: ln, pos, "%d, but max is %d", levels, ctx->argc);
3750: levels = ctx->argc;
3751: }
3752: if (levels == 0)
3753: return ROFF_IGN;
3754: for (i = 0; i < levels; i++)
3755: free(ctx->argv[i]);
3756: ctx->argc -= levels;
3757: for (i = 0; i < ctx->argc; i++)
3758: ctx->argv[i] = ctx->argv[i + levels];
3759: return ROFF_IGN;
3760: }
3761:
1.340 schwarze 3762: static int
1.105 kristaps 3763: roff_so(ROFF_ARGS)
3764: {
1.249 schwarze 3765: char *name, *cp;
1.105 kristaps 3766:
1.238 schwarze 3767: name = buf->buf + pos;
1.350 schwarze 3768: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3769:
3770: /*
3771: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3772: * opening anything that's not in our cwd or anything beneath
3773: * it. Thus, explicitly disallow traversing up the file-system
3774: * or using absolute paths.
3775: */
3776:
1.238 schwarze 3777: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3778: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3779: buf->sz = mandoc_asprintf(&cp,
3780: ".sp\nSee the file %s.\n.sp", name) + 1;
3781: free(buf->buf);
3782: buf->buf = cp;
3783: *offs = 0;
1.277 schwarze 3784: return ROFF_REPARSE;
1.105 kristaps 3785: }
3786:
3787: *offs = pos;
1.277 schwarze 3788: return ROFF_SO;
1.105 kristaps 3789: }
1.92 schwarze 3790:
1.266 schwarze 3791: /* --- user defined strings and macros ------------------------------------ */
3792:
1.340 schwarze 3793: static int
1.106 kristaps 3794: roff_userdef(ROFF_ARGS)
1.99 kristaps 3795: {
1.339 schwarze 3796: struct mctx *ctx;
3797: char *arg, *ap, *dst, *src;
3798: size_t sz;
3799:
3800: /* Initialize a new macro stack context. */
3801:
3802: if (++r->mstackpos == r->mstacksz) {
3803: r->mstack = mandoc_recallocarray(r->mstack,
3804: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3805: r->mstacksz += 8;
3806: }
3807: ctx = r->mstack + r->mstackpos;
3808: ctx->argsz = 0;
3809: ctx->argc = 0;
3810: ctx->argv = NULL;
3811:
3812: /*
3813: * Collect pointers to macro argument strings,
3814: * NUL-terminating them and escaping quotes.
3815: */
3816:
3817: src = buf->buf + pos;
3818: while (*src != '\0') {
3819: if (ctx->argc == ctx->argsz) {
3820: ctx->argsz += 8;
3821: ctx->argv = mandoc_reallocarray(ctx->argv,
3822: ctx->argsz, sizeof(*ctx->argv));
3823: }
1.355 schwarze 3824: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3825: sz = 1; /* For the terminating NUL. */
3826: for (ap = arg; *ap != '\0'; ap++)
3827: sz += *ap == '"' ? 4 : 1;
3828: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3829: for (ap = arg; *ap != '\0'; ap++) {
3830: if (*ap == '"') {
3831: memcpy(dst, "\\(dq", 4);
3832: dst += 4;
3833: } else
3834: *dst++ = *ap;
1.106 kristaps 3835: }
1.339 schwarze 3836: *dst = '\0';
1.355 schwarze 3837: free(arg);
1.337 schwarze 3838: }
3839:
1.339 schwarze 3840: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3841:
1.238 schwarze 3842: free(buf->buf);
1.339 schwarze 3843: buf->buf = mandoc_strdup(r->current_string);
3844: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3845: *offs = 0;
1.106 kristaps 3846:
1.277 schwarze 3847: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3848: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3849: }
1.121 schwarze 3850:
1.306 schwarze 3851: /*
3852: * Calling a high-level macro that was renamed with .rn.
3853: * r->current_string has already been set up by roff_parse().
3854: */
1.340 schwarze 3855: static int
1.306 schwarze 3856: roff_renamed(ROFF_ARGS)
3857: {
3858: char *nbuf;
3859:
1.315 schwarze 3860: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3861: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3862: free(buf->buf);
3863: buf->buf = nbuf;
1.329 schwarze 3864: *offs = 0;
1.306 schwarze 3865: return ROFF_CONT;
3866: }
3867:
1.362 ! schwarze 3868: /*
! 3869: * Measure the length in bytes of the roff identifier at *cpp
! 3870: * and advance the pointer to the next word.
! 3871: */
1.212 schwarze 3872: static size_t
1.121 schwarze 3873: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3874: {
3875: char *name, *cp;
1.212 schwarze 3876: size_t namesz;
1.121 schwarze 3877:
3878: name = *cpp;
1.362 ! schwarze 3879: if (*name == '\0')
1.277 schwarze 3880: return 0;
1.121 schwarze 3881:
1.362 ! schwarze 3882: /* Advance cp to the byte after the end of the name. */
! 3883:
1.212 schwarze 3884: for (cp = name; 1; cp++) {
1.362 ! schwarze 3885: namesz = cp - name;
! 3886: if (*cp == '\0' || *cp == ' ')
1.212 schwarze 3887: break;
1.362 ! schwarze 3888: if (*cp != '\\')
1.121 schwarze 3889: continue;
1.362 ! schwarze 3890: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 3891: break;
1.362 ! schwarze 3892: if (*++cp == '\\')
1.121 schwarze 3893: continue;
1.350 schwarze 3894: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 3895: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3896: mandoc_escape((const char **)&cp, NULL, NULL);
3897: break;
1.121 schwarze 3898: }
3899:
3900: /* Read past spaces. */
1.362 ! schwarze 3901:
! 3902: while (*cp == ' ')
1.121 schwarze 3903: cp++;
3904:
3905: *cpp = cp;
1.277 schwarze 3906: return namesz;
1.121 schwarze 3907: }
3908:
1.106 kristaps 3909: /*
3910: * Store *string into the user-defined string called *name.
3911: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3912: * append == 0: replace mode
3913: * append == 1: single-line append mode
3914: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3915: */
1.94 kristaps 3916: static void
1.106 kristaps 3917: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3918: int append)
1.92 schwarze 3919: {
1.315 schwarze 3920: size_t namesz;
1.164 kristaps 3921:
1.315 schwarze 3922: namesz = strlen(name);
3923: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3924: string ? strlen(string) : 0, append);
1.315 schwarze 3925: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3926: }
3927:
3928: static void
1.166 kristaps 3929: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3930: const char *string, size_t stringsz, int append)
1.164 kristaps 3931: {
1.166 kristaps 3932: struct roffkv *n;
1.164 kristaps 3933: char *c;
3934: int i;
3935: size_t oldch, newch;
1.92 schwarze 3936:
1.106 kristaps 3937: /* Search for an existing string with the same name. */
1.164 kristaps 3938: n = *r;
3939:
1.211 schwarze 3940: while (n && (namesz != n->key.sz ||
3941: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3942: n = n->next;
1.94 kristaps 3943:
3944: if (NULL == n) {
1.106 kristaps 3945: /* Create a new string table entry. */
1.166 kristaps 3946: n = mandoc_malloc(sizeof(struct roffkv));
3947: n->key.p = mandoc_strndup(name, namesz);
3948: n->key.sz = namesz;
3949: n->val.p = NULL;
3950: n->val.sz = 0;
1.164 kristaps 3951: n->next = *r;
3952: *r = n;
1.193 schwarze 3953: } else if (0 == append) {
1.166 kristaps 3954: free(n->val.p);
3955: n->val.p = NULL;
3956: n->val.sz = 0;
1.106 kristaps 3957: }
3958:
3959: if (NULL == string)
3960: return;
3961:
3962: /*
3963: * One additional byte for the '\n' in multiline mode,
3964: * and one for the terminating '\0'.
3965: */
1.193 schwarze 3966: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3967:
1.166 kristaps 3968: if (NULL == n->val.p) {
3969: n->val.p = mandoc_malloc(newch);
3970: *n->val.p = '\0';
1.106 kristaps 3971: oldch = 0;
3972: } else {
1.166 kristaps 3973: oldch = n->val.sz;
3974: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3975: }
3976:
3977: /* Skip existing content in the destination buffer. */
1.166 kristaps 3978: c = n->val.p + (int)oldch;
1.106 kristaps 3979:
3980: /* Append new content to the destination buffer. */
1.164 kristaps 3981: i = 0;
3982: while (i < (int)stringsz) {
1.106 kristaps 3983: /*
3984: * Rudimentary roff copy mode:
3985: * Handle escaped backslashes.
3986: */
1.164 kristaps 3987: if ('\\' == string[i] && '\\' == string[i + 1])
3988: i++;
3989: *c++ = string[i++];
1.106 kristaps 3990: }
1.94 kristaps 3991:
1.106 kristaps 3992: /* Append terminating bytes. */
1.193 schwarze 3993: if (1 < append)
1.106 kristaps 3994: *c++ = '\n';
1.163 kristaps 3995:
1.106 kristaps 3996: *c = '\0';
1.166 kristaps 3997: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3998: }
3999:
1.94 kristaps 4000: static const char *
1.325 schwarze 4001: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4002: int *deftype)
1.92 schwarze 4003: {
1.315 schwarze 4004: const struct roffkv *n;
1.325 schwarze 4005: int found, i;
1.315 schwarze 4006: enum roff_tok tok;
4007:
1.325 schwarze 4008: found = 0;
4009: for (n = r->strtab; n != NULL; n = n->next) {
4010: if (strncmp(name, n->key.p, len) != 0 ||
4011: n->key.p[len] != '\0' || n->val.p == NULL)
4012: continue;
4013: if (*deftype & ROFFDEF_USER) {
4014: *deftype = ROFFDEF_USER;
4015: return n->val.p;
4016: } else {
4017: found = 1;
4018: break;
4019: }
4020: }
4021: for (n = r->rentab; n != NULL; n = n->next) {
4022: if (strncmp(name, n->key.p, len) != 0 ||
4023: n->key.p[len] != '\0' || n->val.p == NULL)
4024: continue;
4025: if (*deftype & ROFFDEF_REN) {
4026: *deftype = ROFFDEF_REN;
4027: return n->val.p;
4028: } else {
4029: found = 1;
4030: break;
1.315 schwarze 4031: }
4032: }
1.325 schwarze 4033: for (i = 0; i < PREDEFS_MAX; i++) {
4034: if (strncmp(name, predefs[i].name, len) != 0 ||
4035: predefs[i].name[len] != '\0')
4036: continue;
4037: if (*deftype & ROFFDEF_PRE) {
4038: *deftype = ROFFDEF_PRE;
4039: return predefs[i].str;
4040: } else {
4041: found = 1;
4042: break;
1.315 schwarze 4043: }
4044: }
1.356 schwarze 4045: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4046: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4047: if (strncmp(name, roff_name[tok], len) != 0 ||
4048: roff_name[tok][len] != '\0')
4049: continue;
4050: if (*deftype & ROFFDEF_STD) {
4051: *deftype = ROFFDEF_STD;
4052: return NULL;
4053: } else {
4054: found = 1;
4055: break;
1.315 schwarze 4056: }
4057: }
4058: }
1.356 schwarze 4059: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4060: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4061: if (strncmp(name, roff_name[tok], len) != 0 ||
4062: roff_name[tok][len] != '\0')
4063: continue;
4064: if (*deftype & ROFFDEF_STD) {
4065: *deftype = ROFFDEF_STD;
4066: return NULL;
4067: } else {
4068: found = 1;
4069: break;
1.315 schwarze 4070: }
4071: }
1.325 schwarze 4072: }
4073:
4074: if (found == 0 && *deftype != ROFFDEF_ANY) {
4075: if (*deftype & ROFFDEF_REN) {
4076: /*
4077: * This might still be a request,
4078: * so do not treat it as undefined yet.
4079: */
4080: *deftype = ROFFDEF_UNDEF;
4081: return NULL;
1.315 schwarze 4082: }
1.325 schwarze 4083:
4084: /* Using an undefined string defines it to be empty. */
4085:
4086: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4087: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4088: }
1.325 schwarze 4089:
1.315 schwarze 4090: *deftype = 0;
1.277 schwarze 4091: return NULL;
1.92 schwarze 4092: }
4093:
1.94 kristaps 4094: static void
1.167 kristaps 4095: roff_freestr(struct roffkv *r)
1.92 schwarze 4096: {
1.166 kristaps 4097: struct roffkv *n, *nn;
1.92 schwarze 4098:
1.167 kristaps 4099: for (n = r; n; n = nn) {
1.166 kristaps 4100: free(n->key.p);
4101: free(n->val.p);
1.92 schwarze 4102: nn = n->next;
4103: free(n);
4104: }
1.114 kristaps 4105: }
1.266 schwarze 4106:
4107: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4108:
4109: /*
4110: * Duplicate an input string, making the appropriate character
4111: * conversations (as stipulated by `tr') along the way.
4112: * Returns a heap-allocated string with all the replacements made.
4113: */
4114: char *
4115: roff_strdup(const struct roff *r, const char *p)
4116: {
1.166 kristaps 4117: const struct roffkv *cp;
1.164 kristaps 4118: char *res;
4119: const char *pp;
4120: size_t ssz, sz;
4121: enum mandoc_esc esc;
4122:
1.167 kristaps 4123: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4124: return mandoc_strdup(p);
1.164 kristaps 4125: else if ('\0' == *p)
1.277 schwarze 4126: return mandoc_strdup("");
1.164 kristaps 4127:
4128: /*
4129: * Step through each character looking for term matches
4130: * (remember that a `tr' can be invoked with an escape, which is
4131: * a glyph but the escape is multi-character).
4132: * We only do this if the character hash has been initialised
4133: * and the string is >0 length.
4134: */
4135:
4136: res = NULL;
4137: ssz = 0;
4138:
4139: while ('\0' != *p) {
1.289 schwarze 4140: assert((unsigned int)*p < 128);
4141: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4142: sz = r->xtab[(int)*p].sz;
4143: res = mandoc_realloc(res, ssz + sz + 1);
4144: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4145: ssz += sz;
4146: p++;
4147: continue;
4148: } else if ('\\' != *p) {
4149: res = mandoc_realloc(res, ssz + 2);
4150: res[ssz++] = *p++;
4151: continue;
4152: }
4153:
1.164 kristaps 4154: /* Search for term matches. */
1.167 kristaps 4155: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4156: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4157: break;
4158:
4159: if (NULL != cp) {
4160: /*
4161: * A match has been found.
4162: * Append the match to the array and move
4163: * forward by its keysize.
4164: */
1.207 schwarze 4165: res = mandoc_realloc(res,
4166: ssz + cp->val.sz + 1);
1.166 kristaps 4167: memcpy(res + ssz, cp->val.p, cp->val.sz);
4168: ssz += cp->val.sz;
4169: p += (int)cp->key.sz;
1.164 kristaps 4170: continue;
4171: }
4172:
1.167 kristaps 4173: /*
4174: * Handle escapes carefully: we need to copy
4175: * over just the escape itself, or else we might
4176: * do replacements within the escape itself.
4177: * Make sure to pass along the bogus string.
4178: */
4179: pp = p++;
4180: esc = mandoc_escape(&p, NULL, NULL);
4181: if (ESCAPE_ERROR == esc) {
4182: sz = strlen(pp);
1.164 kristaps 4183: res = mandoc_realloc(res, ssz + sz + 1);
4184: memcpy(res + ssz, pp, sz);
1.167 kristaps 4185: break;
1.164 kristaps 4186: }
1.207 schwarze 4187: /*
4188: * We bail out on bad escapes.
1.167 kristaps 4189: * No need to warn: we already did so when
1.355 schwarze 4190: * roff_expand() was called.
1.167 kristaps 4191: */
4192: sz = (int)(p - pp);
4193: res = mandoc_realloc(res, ssz + sz + 1);
4194: memcpy(res + ssz, pp, sz);
4195: ssz += sz;
1.164 kristaps 4196: }
4197:
4198: res[(int)ssz] = '\0';
1.277 schwarze 4199: return res;
1.227 schwarze 4200: }
4201:
4202: int
4203: roff_getformat(const struct roff *r)
4204: {
4205:
1.277 schwarze 4206: return r->format;
1.174 kristaps 4207: }
4208:
4209: /*
1.207 schwarze 4210: * Find out whether a line is a macro line or not.
1.174 kristaps 4211: * If it is, adjust the current position and return one; if it isn't,
4212: * return zero and don't change the current position.
4213: * If the control character has been set with `.cc', then let that grain
4214: * precedence.
4215: * This is slighly contrary to groff, where using the non-breaking
4216: * control character when `cc' has been invoked will cause the
4217: * non-breaking macro contents to be printed verbatim.
4218: */
4219: int
4220: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4221: {
4222: int pos;
4223:
4224: pos = *ppos;
4225:
1.303 schwarze 4226: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4227: pos++;
1.303 schwarze 4228: else if (r->control != '\0')
1.277 schwarze 4229: return 0;
1.174 kristaps 4230: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4231: pos += 2;
4232: else if ('.' == cp[pos] || '\'' == cp[pos])
4233: pos++;
4234: else
1.277 schwarze 4235: return 0;
1.174 kristaps 4236:
4237: while (' ' == cp[pos] || '\t' == cp[pos])
4238: pos++;
4239:
4240: *ppos = pos;
1.277 schwarze 4241: return 1;
1.74 kristaps 4242: }
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